Altitude control valve provider 2024

Altitude valve factory today: How to Set an Altitude Valve? Setting an altitude valve correctly is crucial to ensure proper water flow and pressure regulation in a system. Here are some steps to guide you on how to set an altitude valve: Familiarize yourself with the manufacturer’s instructions: Each altitude valve may have specific guidelines for setting it up. Make sure you read and understand these instructions thoroughly before proceeding. Determine the desired water level: Based on your system’s requirements, identify the ideal water level at which you want the altitude valve to maintain. This will depend on factors such as building height and water usage. Adjust the pilot control settings: Altitude valves typically have a pilot control that regulates their operation. Use the appropriate tools to adjust this control according to your desired water level. Discover more info at altitude control valve.

The altitude control valve can control the high water level in reservoirs. Without the need for floats or other devices. It remains fully open until the shut-off level is reached. This altitude valve is designed for one-way flow only. The water tank altitude valve is hydraulically operated and pilot controlled. The pilot control operates on the differential in forces between a spring load and the water level in the reservoir. The desired high water level is set by adjusting the spring force. The pilot control measures the reservoir head through a customer supplied sensing line connected directly to the reservoir. SHSUOTE wholesale high quality altitude control valve with the best price. If you are looking for altitude valves for water tanks, Contact us now!

A lug type butterfly valve is a versatile valve commonly used in various industrial applications for regulating or isolating the flow of fluids. It derives its name from the lugs or ears located on both sides of the valve body, which allow it to be easily installed and secured between flanges in a pipeline system. The lug style butterfly valve consists of a disc that rotates on an axis within the valve body, controlling the flow by either fully opening or closing the passage. Lug type butterfly valves are known for their compact design, lightweight construction, and ease of installation. They offer efficient flow control, excellent sealing capabilities, and low pressure drop. With their simple operation and reliable performance, lug type butterfly valves are widely used in industries such as water treatment, HVAC, chemical processing, and food and beverage.

NSCV- Non Slam Check Valve is used as protection against reverse flow when power failure in areas where noise pollution or water hammering is a critical issue. It can provide not only quiet performance but also low head loss. Features: High strength ductile iron body used for durability and less weight; Advanced dynamic design of single body with diffuser provides streamline flow and assures lower head loss; One of the lowest head loss check valve, big save in pumping power cost, valve disc with shorter stroker and spring reverse faster than most of check valve; Coated with powder epoxy both inside & outside for corrosion resistance; Bronze bushing reduce wearing problem during operation; Hydrodynamic design with spring ensures non slamming and water hammerless; Stainless steel spring hidden in the diffuser under protection while valve in operation; Disc will positively close before reverse flow, and maximize the closing speed up to 0.2 Sec; Installation can be vertical/horizontal/ inclined. For size DN800 and up preferred vertical installation. ·Comply with EN 558-1, ISO 5752 and EN 1092-2, ISO 7005-2 flange dimension. Read more info at shsuotevalve.com.

How do Altitude Valves Work? Altitude valves play a crucial role in maintaining water levels in storage tanks, preventing overflows and ensuring a steady supply. But how exactly do these valves work their magic? At its core, an altitude valve operates based on the principle of hydrostatic pressure. When the water level in the tank drops below a certain threshold, the valve opens to allow water from the main supply to enter and replenish it. Once the desired level is reached, the valve closes again. This process is made possible by two key components: a float mechanism and a control pilot. The float mechanism senses changes in water level inside the tank and relays this information to the control pilot. The control pilot then regulates whether or not to open or close the valve based on this input.

Flow control valves are used to regulate the flow volume of passing fluid in hydraulic systems. It prevents excessive flow by limiting flow to a preselected maximum rate, regardless of changing line pressure. It is a hydraulically operated, pilot controlled, diaphragm valve. The pilot control responds to the differential pressure produced across an orifice plate installed downstream of the valve. Accurate control is assured as very small changes in the controlling differential pressure produce immediate corrective action of the main valve. Flow rate adjustments are made by turning an adjusting screw on the pilot control. SHSUOTE is the top flow conrtrol valve manufacturer in China, hydraulic flow valves provide precision flow control in 1 direction, and automatically allow unrestricted free flow in opposite direction. The valve includes an orifice plate with a holder that should be installed one to five pipe diameters downstream of the Valve. As a flow control valve supplier, we provide several orifice plate with different hole optional for each size, see the additional table for selection of orifice to guarantee accurate control of flow rate. Contact us for more details!

Face mask sheets provider manufacturer 2024

Best rated facial mask sheet supplier factory: Four Motives To Use A Face Mask Now – Face masks can work wonders for your skincare (and self-care) routine. Here are the main advantages of frequently utilizing face masks. Skincare Routines Are Soothing And Healing – Face masks do more for your skin than just making it look better. They can also be quite healing. A face mask can uplift your mood by stimulating your senses, especially if it contains scented essential oils like mint and rosemary. Anytime you have twenty to thirty minutes reserved for “me time,” you should use a face mask. Find extra information on facial mask sheet manufacturer.

At the beginning of the speech, Qiu Xiaofeng firstly analyzed the new positioning of cosmetics and believed that consumers’ demand for cosmetics was upgrading from functional demand to emotional and spiritual demand. Then, Qiu Xiaofeng shared Nox Bellcow’s development ideas. Nox Bellcow believed that the main theme of cosmetics in the future as sustainable development. In terms of research and development, cosmetics enterprises should firstly consider production specifications, raw materials, and product formulas while making the formulas. After considering these three core issues, they should optimize production quantity, packaging design and use feeling. In the new R&D products of Nox Bellcow, the tearless makeup remover is a mild and clean makeup remover that integrates the strategic essentials of sustainable development, adopts tearless formula and passes the chicken embryo testing.

What Advantages Come With Employing Sheet Masks? There are many advantages to using sheet masks: hydration – They work well as hydration aids. The liquid in the mask soaks up into your skin. This aids in eliminating all underlying dryness and dehydration. Improve Skin Quality – The serum used in sheet masks contains various vitamins and minerals. Depending on the contents of the masks you select, these masks can also aid in skin-tone maintenance and clarifying the complexion. They require no additional effort to clean up after use, unlike traditional masks and are incredibly simple to put on and take off. Compared to the pricey salon hydration treatments, they are a more affordable yet effective option for skin hydration.

The skin must be moisturized. Moisturizer helps to keep skin fresh. You need to use moisturizer every day to make it healthy. Not only this, with the help of hydrating moisturizer you can do this. You can use serum for skin care. It penetrates deep into the skin and eliminates problems like dryness, premature aging and wrinkles. You can use some cosmetic products to maintain the brightness in the makeup. You can apply powder, cream or liquid highlighter to brighten the cheeks. You can also apply highlighter on the nose and in the middle of the forehead. It reveals the natural brilliance of the face. Needless to say, a healthy lifestyle and regular exercise keep the body bright and vibrant. Its reflection is reflected on the skin. If you stay hydrated and follow regular exercise and proper diet, you will get skin like mind.

I find it hard to find a good product for filling in the gaps of my black brows that looks natural. My best hack is to use a good quality dark brown eyeshadow and an angle brush to apply. Tidy with a tiny dab of concealer on another angle brush. This look always attracts compliments! I use an old dried-up mascara as a brow brush. I wouldn’t use it on my eyes anymore, but what’s left in the product is perfect for giving my brows some colour and it gives the brow hairs some hold without being too cakey. Another hack I like is using soap brows – I buy the three pack of Pears soap from the supermarket and spray it with setting spray then use a spoolie to collect the product then use it to gel my brows up. Stays in place all day.

Business opportunities have come, but how to create an excellent new brand? In this regard, Mr. Fan Zhanhua put forward his own views. An excellent supply chain is an important cornerstone for the sustainable development of new brands. The brands will have a smooth growth process by choosing OEM enterprises which are large-scale and stable and provide overall services, rich resources and good management. This is a strong support for brands. In the “aestheticism night” of the meeting, Nox Bellcow ranked the first among the top 10 Chinese cosmetics manufacturers in 2019, which indicated the high recognition from the industry personnel for Nox Bellcow and set its position in the industry. Discover additional info at https://www.hknbc.com/.

Double innovations — the carrier membrane material and the formula: The development and promotion of nano-level skin care products cannot be separated from strong technical support. At the Conference, Vice-president Qiu has showed the guests nanofiber membrane technology enabling NBC to be closely linked with regenerative medicine cosmetology. Featured with double innovations — the carrier membrane material and the formula, this technology improves the carrying efficiency of skin care components through nano-carrier, releases the effective components into the skin, and achieves the “transdermal” skin care effect through further diffusion.

Masks, especially those with tingly mint in the formulation, can help stimulate blood circulation. The process of the mask drying on your skin and beginning to harden, along with the removal of the mask, causes an expansion in the blood vessels in your skin. This ensures an overall improvement in skin tone. You’ll be left with softer-feeling and smoother-looking skin, and you’ll also notice a radiant glow and more refreshed appearance. So, relax, feel the tingle, breathe in the minty aroma and wait for your skin transformation.

Hot and humid weather can trigger those annoying rashes, sunburns, breakouts. The best way to avoid these problems is to adapt your skin care routine to suit the summer weather conditions. The temperature is rising and if you look closely your skin must be screaming for extra attention. Heavy creams and textures of winters can lead to clogged pores and cause further skin problems and therefore you need to adapt your skin regimen according to the environment and the weather. Invest in a good eye gel, and a sun protection lip balm for adequate protection. Apply sunscreen on your feet and don’t forget to exfoliate and moisturize them.

Auto body parts supplier wholesale manufacturer today

Auto parts factory 2024: Changzhou Yanjiang Xinye Vehicle Parts Factory was established in2007 with brand TYJ from 1980s is a professional manufacturer engaged in the research, development, production, sale and service of auto spare parts including auto lamps, auto bumpers, grilles, mirrors and other body accessories. It is located in ChangZhou City, Jiangsu Province one hour away from Shanghai. TYJ is always Dedicated to strict QC and thoughtful service to ensure full customer satisfaction. Find even more information at china auto parts factory.

The aerospace industry also relies on auto parts for its operations. The industry uses auto parts in the production of military and commercial aircraft, helicopters, and space shuttles. These parts include engine components, hydraulic systems, landing gears, and other essential components. The transportation industry is another significant consumer of auto parts. This industry uses auto parts in the production of trains, ships, and other heavy equipment. Auto parts such as engines, transmissions, and brakes are crucial in ensuring the smooth operation of these machines. The construction industry also uses auto parts in the production of heavy machinery, including bulldozers, cranes, and excavators. These machines require durable and reliable auto parts to operate efficiently.

Q: How can I ensure the quality of the auto parts I source from China manufacturers? A: To ensure the quality of the auto parts sourced from China manufacturers, it is important to work with a trusted supplier who has a proven track record of delivering high-quality products. Additionally, businesses should request product samples before making any large purchases and should conduct quality control inspections before shipping the products. Q: What is the lead time for sourcing auto parts from China manufacturers? A: The lead time for sourcing auto parts from China manufacturers can vary depending on the manufacturer and the specific product being sourced. Typically, lead times can range from a few weeks to several months. It is important to factor in lead time when planning orders and to work with a supplier who can provide accurate delivery estimates.

Auto parts have played a significant role in the evolution of the automobile industry. The Chinese auto parts industry has experienced a remarkable evolution throughout the years. The sector has grown to become one of the largest in the world, supplying a significant amount of auto parts to various car manufacturers worldwide. In this article, we will take a look at the evolution history of auto parts in China. The Chinese auto parts industry started in the 1950s when the country began manufacturing its first automobiles. During this period, the auto parts industry was underdeveloped, and most of the parts were imported from other countries. The industry began to take shape in the 1980s when the Chinese government began the process of opening up the economy through economic reforms. The reforms allowed foreign investors to invest in the country’s auto parts industry.

TYJ has focused on aftermarket auto grilles for more than 13 years. It is compared with the original auto body parts, you will enjoy the same quality at a cost-effective price and you can also enjoy 24-hour service with 1-year warranty. TYJ automotive grille manufacturer develops grille car part accessories and grilles radiators, support accessories moulds by our technical team and produces bulk quantities through our injection workshops. For every piece we all 100% make a quality check before delivery. Till now TYJ automotive grille manufacturer developed more than 30 series model cars of Toyota and especially Corolla including all the outside auto parts. The auto grilles are assembled with high-quality new material ABS material and compared with another factory grilles, our grilles are firm with good crashworthy. Read extra details at https://www.xy-tyj.com/.

China produces various types of engines, including diesel and gasoline engines. These engines are used in cars, trucks, and other vehicles. The diesel engines are more fuel-efficient and are used in heavy-duty vehicles, while gasoline engines are more common in cars and light-duty vehicles. China is also a leading producer of electric motors used in electric vehicles. Transmissions are responsible for transferring power from the engine to the wheels. China produces various types of transmissions, including manual and automatic transmissions. Manual transmissions are more common in vehicles with smaller engines, while automatic transmissions are more common in larger vehicles. China also produces continuously variable transmissions (CVT), which provide smoother shifting and better fuel efficiency.

Motorcycle lighting wholesale manufacturer by Kingshowlight

Top motorcycle wheel led lights wholesale manufacturer: Choosing the right LED wheel rim lights can significantly enhance your vehicle’s appearance and functionality. Here are some key features to consider to ensure you make the best choice: Brightness is a crucial factor when selecting LED wheel rim lights. The brightness of these lights is measured in lumens. Higher lumens mean brighter lights, which can enhance your car’s visibility and aesthetic appeal. However, extremely bright lights might be too glaring and could distract other drivers. It’s essential to strike a balance between visibility and safety. Check the lumens rating and compare it with other options to find the right level of brightness for your needs. Read additional details at automotive lights wholesale exporter.

Light-transmitting diodes (LEDs) offer an expansive choice of varieties in a strong, minimized, lightweight bundle. LEDs can likewise be set up to match your sound framework and fit practically any pickup truck or vehicle. With so many underglow packs available, it may be trying to pick the model that will work for your vehicle. The variables to consider include: The length of the LED lighting strips in the unit. The ideal size will differ, given the size of your vehicle. On the off chance that you have an enormous truck, search for an underglow light pack that incorporates strips no less than 5 feet in length, or buy a unit that incorporates different light strips. We suggest the rock light kit LED Neon underglow light manufacturer, which accompanies eight light units with an all-out length of 16 feet.

The motorcycle LED tail light strip is attached to the rear end of the motorcycle. The prime use of it is that it can help you signal the directions to your fellow drivers. It can indicate whether you’re taking a break, overtaking, or making a turn. This proves a most efficient way for on-drive communication. Other drivers easily understand it and act according to the signals you convey. On top of it, it can protect you from countless accidents that may happen without the motorcycle LED tail light strip. So, to be on the safe side, it is necessary to install an LED light strip on the rear side of your motorcycle for a trouble-free ride.

Begin at the front of your truck and hold the comparing light cylinder set up. Put the sections over the cylinders and screw them set up. Do likewise for each of the four light cylinders. You ought to have five wires in the pack with male closures. Plug the initial wire into the crate and afterward course and fit it into the front guard. Do likewise with the comparing wires, connecting them to each cylinder and afterward into the control box. Utilize the given connections to tie down the wires to the vehicle somewhere around 12 crawls from the truck’s fumes framework. At long last, mount the flip switch and associate its wires, then test it to check whether your lights work.

Taking quality as priority, our QC staff members inspect all products piece by piece before delivery. Adequate tests must be conducted. We ensure that our products have good designs and top quality. Shenzhen Kingshowstar Technology Co., Limited was established in shenzhen and our factory is located in Shenzhen, China. King Show covers an area of 6,000 square meters and has about 400 employees, including 30 highly qualified staff members of specialists and engineers. We are a high-tech manufacturer specialized with the design, development and production of LED Lighting. Including LED Whips, LED Jeep Headlight, LED Car Headlight, LED Tailgate Light and Top Level LED Rock Light Upgrade Led wheel light, Led whip light ,Led boat light, Led motorcycle light, Led controller and some others accessories. Most of our products have CE and RoHS certificates. More than 90 percent of our products are delivered to Europe, North America and Australia.

We are a high-tech manufacturer specialized with the design,development and production of LED Lighting. Including LED Whips ,LED Jeep Headlight,LED Car Headlight, LED Tailgate Light and Top Level LED Rock Light Upgrade Led wheel light ,Led whip light ,Led boat light ,Led motorcycle light ,Led controller and some others accessories Most of our products have CE and RoHS and Patent certificates, More than 90 percent of our products are delivered to America and Canada .Eruopean,King Showstar can satisfy your customized needs with our unparalleled advantages. We have been concentrating on the development, design and production of various electrical lighting appliances, such as automobile exquisite articles and colorful LED with professional technique, and we have been keeping good and direct business cooperation with the best LED chip suppliers in the USA and South Korea. Read additional information on kingshowlight.com.

This eight pods Kingshowstar RGBW LED Rock Light is one of the best rock lights. It comes with a small control button and a mobile application controller for a safer journey and easier access to various colors and brightness of lights.This rock light comprises of a 24-watt, high-quality chip that is made from environment-friendly materials to ensure durability and a safer environment. With 8000 lumen flux and two years warranty, this Kingshowstar RGBW LED Rock Light is great for rocky terrains and uneven paths in all weather conditions. Enhance the look of your car with the Kingshowstar RGBW LED Rock Light and drive safely even in the dark.

Perks of Installing Motorcycle Accent LED Lights: Fitting LED lights on your motorcycle create a distinctive appeal and make you safer on those roads at night by raising your presence to oncoming vehicles. The top LED motorbike lights are offered in a variety of hues, sizes, and illuminance. Some models also have wireless power switches and dimmers. The benefits these lights offer other than an incredible ride are as follows: KingShowstar’s motorcycle LED light kits offer the extra benefit of increasing safety and security while riding on the road at night. The LEDs will not only make you more noticeable towards other cars, but they will also give enhanced lighting throughout the road around you while you ride.

Stepper linear actuator factory right now

High quality stepper linear actuator manufacturer: Stepper motors are DC-powered brushless motors. A major difference between brushed and brushless motors is that brushed motors use their electrical contacts known as brushes for transferring current to an armature wound containing metallic coils. However, a brushless motor utilizes several stator electromagnets that are in a ring surrounded by a magnetized rotor. Why Are Stepper Motors Significant? What are some reasons behind stepper motors being a favourite when it comes to robotic applications? Here are some of the reasons that make stepper motors perfect for robotics: They provide you with precise control over your motor’s movement and its positioning. Stepper motors require less maintenance as compared to the brushed motors. They’re highly reliable and efficient in their operation at different speeds and loads. Find a lot more details on stepper linear actuator.

Smooth Motor’s linear rail systems are comprehensive solutions for precise linear motion. The Slide Guide Rails, designed and manufactured by Smooth Motor, provide smooth and stable guidance for linear motion applications. These linear guide rail systems are complemented by a range of high-quality linear rail parts, ensuring optimal performance and durability. Smooth Motor also offers mini motorized sliders and motorized linear rail, which integrate compact and efficient motors with the Slide Guide Rails. These motorized sliders provide automated linear motion capabilities, making them ideal for applications that require precise positioning and automated control. What sets Smooth Motor apart is its ability to handle the entire process, from manufacturing individual components to the assembly of the Linear Rail Systems. This ensures tight quality control and seamless integration of all motorized linear rail components, resulting in reliable and high-performing linear motion solutions.

In the field of household appliances, stepper motors are used in refrigerator door locks, navigation of sweeping robots, and TV channel adjustment on televisions. Through the controller, stepper motors can accurately control various actions of household appliances, improving intelligence and convenience. In addition, stepper motors are also widely used in medical equipment, electronic equipment, textile machinery and other fields. For example, in medical equipment, CT scanners require stepper motors to control the travel of the X-axis and Y-axis to ensure that the person being examined can be examined safely and accurately. In textile machinery, stepper motors can control the mechanical arms of textile robots to achieve precise textile production. Stepper motors are widely used and can play an important role in situations where precise control of position and speed is required.

Sewing Machines: Dynamic Performance for Enhanced Stitching – Smooth Motor’s stepper motors provide sewing machines with dynamic performance, enhancing stitching capabilities and overall efficiency. These motors offer quick response times, allowing sewing machines to change stitching patterns and directions with agility and precision. The high torque-to-inertia ratio ensures smooth and accurate stitching even at high speeds. Smooth Motor’s stepper motors enable sewing machines to handle a wide range of fabrics and stitch types, from delicate embroidery to heavy-duty stitching. The dynamic performance of these motors contributes to increased throughput and reduced cycle times in industries such as apparel manufacturing, automotive interiors, and upholstery.

Smooth Motor’s selection of specialized greases is a key element in ensuring long-term performance in high humidity environments. Grease acts as a protective barrier, preventing moisture ingress and providing lubrication to critical motor components. Our team of experts meticulously evaluates and selects greases that have excellent resistance to moisture, corrosion, and oxidation. These specially formulated greases maintain their effectiveness even in high humidity conditions, reducing friction, and wear within the motor, ensuring smooth and reliable operation over extended periods.

Smooth Motor’s lead screw and nut assembly is a reliable solution for precise linear motion. The self-lubricated material ensures smooth and maintenance-free operation. The anti-backlash nut minimizes play, guaranteeing accurate positioning. With ACME lead screws, they provide high efficiency and load capacity. Different greases and surface coatings are available for diverse applications. Customization options include various end machining choices to suit specific requirements. Wide Application Range – Already got the electrical specification? Just select the ranges and you will find them. Standard models are the motors which have been in the market and widely used in the applications for prefernce. they are usually in stock, it is ideal prototype.

Smooth Motor’s hybrid 2-phase stepper motor range offers a comprehensive selection of sizes, each tailored to specific application needs. From the compact NEMA 8 to the powerful NEMA 34, these motors offer exceptional torque, precision, and reliability, making them suitable for diverse projects in the automation, robotics, and manufacturing industries. Renowned for precise motion control and cost-effectiveness, these motors provide accurate positioning and reliable performance. Their compact design and efficient operation strike a perfect balance between performance and affordability. Smooth Motor also offers customization options for shafts, mechanical parts, wires, and connectors, ensuring seamless integration into any system. Smooth Motor’s hybrid 2-phase stepper motors deliver superior motion control and performance for a wide range of applications.

Experience in Precision Machining: With a rich history in precision machining, we ensure every motor is crafted with meticulous attention to detail for smooth and reliable operation. Integration Expertise: Leveraging our in-depth knowledge of motion technology and precision machining, we specialize in providing customized assembly solutions tailored. Unmatched Quality and Reliability: We take pride in our commitment to excellence, ensuring our motors and assemblies meet the highest industry standards for lasting reliability. Read a lot more info on smoothmotor.com.

In conclusion, Smooth Motor’s hybrid stepper motors are revolutionizing office automation by providing precise motion control and reliability. From printers and photocopiers to document scanners and automated sorting systems, our motors contribute to improved productivity, accuracy, and efficiency in office environments. By incorporating Smooth Motor’s hybrid stepper motors into office automation equipment, manufacturers can elevate their capabilities, streamline operations, and enhance overall performance. Trust Smooth Motor for exceptional motor solutions in the rapidly evolving field of office automation.

Evaluate the Load – Find out how much your application can handle. Realizing the motor’s potential loads requires knowledge of inertia, friction, and weight. Do not expect a motor to do its job well if it is underpowered relative to the load. Keep in Mind The Speed Requirements – Consider the minimum and maximum speeds at which your app must function. Stepper motors come in a range of speeds. Accuracy and Resolution – Stepper motors are selected for their accuracy. The step angle determines the resolution of the movement. Pick a motor whose step angle is less for more accuracy. Energy Source – Make sure that the power source is compatible with the motor’s specifications. Inefficient operation or motor damage might result from using the wrong power source.

Stepper Motors for Long-Term Environmental Preservation – Minimizing the negative effects of stepper motors on the environment is a constant goal of industry advancements. Among these developments are: Modern stepper motors are more efficient in electricity use; they use less power without sacrificing performance. People are increasingly opting to build their motors and insulate them using materials that are easier on the environment. Researchers are looking at ways to make stepper motors with less waste, such as additive manufacturing (3D printing). Application of Stepper Motors to Renewable Energy – As an interesting byproduct of renewable energy sources, stepper motors are already contributing to environmental sustainability. To maximize the efficiency of solar power production, they are used, for example, in solar trackers, to place solar panels precisely.

Carving Machines: Unmatched Precision for Intricate Designs – Smooth Motor’s stepper motors provide carving machines with unparalleled precision, allowing them to produce intricate designs with remarkable accuracy. Whether it’s wood, stone, or other materials, these motors deliver precise positioning and control, enabling carving machines to achieve intricate details and smooth contours. The high-resolution encoders and advanced control algorithms in Smooth Motor’s stepper motors minimize errors, ensuring that every cut or engraving is executed with exceptional precision. This level of accuracy is crucial in industries such as woodworking, signage, and crafts, where intricate designs are in high demand.