Classification of performance: General Belt; Oil Resistant, Heat Resistant, Chemical Resistant; Fire Resistant; Cold Resistant; Abrasion Resistant; High Temperature Resistant Definition: Chevrons bell with chevrons moulded and direclly integrated in the cover of the conveyor belt, in order to increase the friction between the belt and material conveyed Character:Suitable for conveying powered granulated lumped or bagged materials on inclined surface with angels of no more than 40 degrees Features:Anti-slip:cleats and top cover rubber are vulcanized integrally:cleat pattern angel and pitch are designed elaborately Stucture:Cut edge Mould edge Standards:Can be manufactured following various fabric standards: GB/T7984, GB/T10822, HG3714, HG3782, D1N2210, As1 332, J1SK6322 Chevron profile includes open V type, closed V type, L type, F type, Y type, A type, H type, etc New paterns can be developed for customers accordingly
Hibiscus sabdariffa is a member of the Malvaceae family. It is an annual herb that grows to 6 feet or more, stems are glabrous; lower leaves are ovate with the upper leaves being 3-5 palmately lobed. The flowers are axillary or in terminal racemes, the petals are white with a reddish center at the base of the staminal column, the calyx enlargens at maturity and the fruit is fleshy and bright red. It is known as roselle (English), lâ??oiselle (French), jamaica (Spanish), karkade (Arabic), bissap (Wolof) and d�¢ (Bambara) among other names. The calyces are used to make cold and hot beverages in many of the worldâ??s tropical and subtropical countries. In China the seeds are used for their oil and the plant is used for medicinal properties. The leaves and powdered seeds are eaten in West Africa. White-Yellow colour. A well balanced, tart and astringent flavor. Some cranberry notes as well as a slight drying effect. Not excessively tart, acidic or bitter. Should be free of off-flavours and other undesirable spice/botanical notes.
Hibiscus sabdariffa is a member of the Malvaceae family. It is an annual herb that grows to 6 feet or more, stems are glabrous; lower leaves are ovate with the upper leaves being 3-5 palmately lobed. The flowers are axillary or in terminal racemes, the petals are white with a reddish center at the base of the staminal column, the calyx enlargens at maturity and the fruit is fleshy and bright red. It is known as roselle (English), lâ??oiselle (French), jamaica (Spanish), karkade (Arabic), bissap (Wolof) and d�¢ (Bambara) among other names. The calyces are used to make cold and hot beverages in many of the worldâ??s tropical and subtropical countries. In China the seeds are used for their oil and the plant is used for medicinal properties. The leaves and powdered seeds are eaten in West Africa. White Yellow color. A well balanced, tart and astringent flavor. Some cranberry notes as well as a slight drying effect. Not excessively tart, acidic or bitter. Should be free of off-flavors and other undesirable spice/botanical notes.
Specifications: API CF Packaging: 1 L metal container 12 units / case 4 L metal container 4 units / case 5 L metal container 4 units / case 7 L metal container 3 units / case 208 L drum - TECHNOL TURBODIESEL 15W-40 has been formulated to fulfill the requirements of turbocharged and naturally aspirated diesel engines of light industrial vehicles, equipped with or without catalysts, operating under normal conditions. This engine oil possesses thermal stability, detergent and antiwear properties, provides resistance to oxidation and corrosion, and ensures immediate lubrication of engine components at cold starts. It is suitable for use under all operating conditions in all seasons.
Specifications G9-power is engaged in the manufacture of Hydraulic Thread Rolling Machine 2Roll used for producing screws, bolts, and tools. It is a cold-forming operation only for external screw threads in a blank. The blank is pressed by thread rolling dies which are attached to the machine. The threads were formed by the pressing progress. Hydraulic Thread Rolling Machines Manufactured by G9-power Machines in India are made of high-grade material. The main feature of this Hydraulic Rolling Machine is that it is a very fast and easily comprehensible machine. Before it is dispatched, it is tested many times in our production house, which means that you don't need to worry about anything. If you want to buy a Hydraulic thread rolling machine then feel free to contact us and we will guide you the best. There is a growing demand in the markets for These machines. Hydraulic thread rolling machines are not just made of superior-grade materials but are also easy to use and easier to maintain. One way of ensuring that your purchase of a Hydraulic thread rolling machine is the right one would be to ensure that it is either purchased from a reputed brand or has the backing of a company that has been in the field for a long. The hydraulic thread rolling machines which are brought to the markets under the aegis of G9-power, are one of the best in its domains. This is so because not only does the company have exclusive designs for the thread rolling machines, which make this particular thread rolling machine unique and user friendly, but the fact that they utilise the finest grade material for the fabrication, ensures that it is durable and relatively low on factors such as maintenance. In the world of Hydraulic thread rolling machines, perhaps the most extensive range of hydraulic thread rolling machines is offered by G9-power. This has been possible after years of extensive research being put in by the team at the company. They have been able to develop a wide range of thread rolling machines, which suit the needs and requirements of a variety of industries. Hydraulic thread rolling machines are more often than not, fitted with a truly advanced system. This allows for the function not just smoothly, but also in a hassle-free manner. High-level quality processes and constant checks also ensure that the amount of money and time spent on maintenance is minimal. Apart from this, there is also the guarantee that the ultimate output offered will be on the higher side.
When preparing to start the diesel dewatering pump for the first time, check the installation of all the equipment, start according to the following requirements: inject oil from the fuel filler into the diesel engine and the water pump suspension, and check the oil level with the dipstick to meet the required height; from the expansion tank to the diesel engine Add cooling water inside, the water level should be 2~3 expansion tank high; put diesel in the fuel tank, press the exhaust hand pressure pump, let the diesel enter the machine through the filter; connect the diesel water pump inlet and outlet pipes and gate valve, close the out Gate valve of water pipeline, outlet pressure gauge and vacuum pressure gauge; water or vacuum water supply to diesel water pump and inlet pipe, and evacuate internal air; open external circulation cooling water valve; start when inlet valve is fully open and outlet valve is closed Diesel engine water pump, when the diesel engine reaches normal speed, gradually open the valve on the outlet pipe and adjust to the required working condition. When the diesel engine irrigation pump is running at high speed, the injection process takes only a few thousandths of a second. The pressure throughout the high pressure fuel pipe varies with time and position. Diesel can be compressed and has the property of pressure fluctuation in the high pressure oil pipe, which makes the actual fuel injection state and the prescribed oil supply law have a big difference. The composition, principle and characteristics of high pressure common rail diesel engine, and its current situation and development trend are introduced, which has certain guiding significance for the correct use of high pressure common rail diesel engine. The combustion process of diesel pumps is very important for the operation of diesel engines. The advantages and disadvantages of the combustion process directly affect the power and economy of the diesel engine pump. The power and economy of the engine driven water pump is an important indicator to measure the performance of the diesel engine. Whether the combustion process of the diesel pump can be correctly, timely and completely will directly affect the power and economy of the diesel engine pump.
Size:600*600mm Resflor Introduction of Products     Calcium sulphate raised floor panel make the environment friendly plant's fibre as the reinforcement material, and then solidify the calcium sulphate crystals, and after the pulse pressing process done. It's wildly used in the raw material of the raised flooring,because the good furthers in environment friendly, fireproof, high loading capacity and flatness and so on. Characteristics     1.Strong wearability, nIntroduction of Products     Prefer aluminum as base material. Die casting by large oil press,imported strong glue paste HPL or PVC, pedestal/stringer are pressured forming with steel, lead screw could adjust height, Characteristics. Characteristics     1.This is best base material/optimal conductor in antistatic floor, can give off the static into ground by earthling system in a very short time.     2.Fireproof, soundproof, dustproof, antisoil, resistance to chemical attack, electromagnetic shielding.     3.Pressurization, super strength loading,1.5T for each square.     4.High grade and environmental protection, recycled, no devaluate Range of application; bank and high grade office, clean room and other occasions which require higher loading and material.on-bubble, no degumming     2.Strong design ability, pressurization, good loading capacity;     3.Appearance is beautiful;     4.Easy to fix, convenient for wires.
LED beanie hat - 100% Acrylic Rechargeable LED Beanie: Our rechargeable hat with light provide a standard USB port for battery charging, which means you can charge it in car charger,computer or portable power bank. Just takes about 2-4 hours to fully charge depend on different charging methods, this beanie will always light your way when you need it. Super Bright: With 3 brightness settings, you can adjust the brightness of the hat by pressing according to your own needs. It can last up to 8 hours in the lowest level, 4 hours in medium level and 2 hours in the highest level. Youâ??ll have the perfect amount of light for any task. Keep You Warm: This headlamp beanie is made of soft and elastic acrylic material, comfortable and washable. One size fits all men,women,the simple and stylish design allows everyone to easily match different clothes in the cold winter. Hands Free: No matter what you want to do, this hands free led lighted hat which approves IPX44 water resistant is up for the challenge. Wear it dog walking at night or early morning, running,jogging, camping,fishing, biking, grilling, auto repair, and more. Light your way in dark night and enrich your quality of life. Gifts Idea: Comfortable, super bright, warm, washable, light weight perfect for working out, giftable, our Unisex beanie with light is best present choice for Thanksgiving, Christmas, New Year's Day, Valentines Day, Father Day, birthday and other special occasions. A perfect Gifts for Dad Husband Him Men Women Boyfriend Handyman.
Frozen Lemon Cheesecake with Natural Goodness BAKED CHEESECAKE WEIGHT PORTION Box LEMON CHEESECAKE 1500gr 10 pieces Descriptio Imagine a luscious and creamy lemon cheesecake crafted with the finest natural ingredients, creating a burst of citrusy goodness in every bite. This frozen masterpiece not only tantalizes your taste buds but also preserves the vibrant flavors for an extended indulgence. Crust: The foundation begins with a buttery and crunchy graham cracker crust, carefully mixed and pressed to perfection. The golden-brown crust provides a delightful contrast to the smoothness of the cheesecake. Filling: The heart of this creation is a velvety cream cheese filling, enriched with the zesty essence of fresh lemons. Each spoonful is a symphony of rich, tangy flavors that dance on your palate. Sweetener: To maintain the integrity of natural goodness, only the purest sweeteners are used, allowing the lemony brightness to shine without overwhelming sweetness. A balance is struck to enhance the tartness of the lemons, creating a harmonious blend that is both satisfying and refreshing. Texture: The cheesecake achieves a dreamy consistency â?? smooth, creamy, and dense, with a slight chill from being frozen. The frozen element transforms the dessert into a cool and refreshing treat, perfect for hot summer days or any time you crave a cool, citrus-infused delight. Preservation: To preserve the exquisite flavors, the cheesecake is expertly frozen, locking in the freshness and preventing any compromise in taste or texture. This innovative approach not only extends the shelf life but also intensifies the chilling experience, making it an ideal choice for those who appreciate fresh cold deserts. Presentation: As you take a slice, marvel at the vibrant yellow hue of the cheesecake, hinting at the natural goodness within. A garnish of lemon slices or a sprinkle of zest on top adds a visual appeal that mirrors the tantalizing taste. Indulge in the luxurious experience of a frozen lemon cheesecake made with care and attention to nature's bounty. Each bite is a celebration of freshness, creaminess, and the invigorating zest of lemons, providing a delightful escape into a world of cool, natural sweetness.
Standard ISO,DIN,JIS,ANSI,BSW,GB and non-standard fastener according to customers' drawing Machines Auto pressing machines, automatic heading machine,CNC machines, cold header high-precision surface grinder machine, involantary grinder machines,Hardness tester, Electrolytic metrical thickness gauge, Vision Measuring Machine,Thickness Gauge and so on Material 1.Stainless Steel: SS201, SS303, SS304, SS316, SS410, SS420 and So on 2.Steel: Carbon Steel,Alloy Steel,Spring Steel and So on 3.Brass:C36000, C37700 (HPb59), C38500(HPb58),C27200(CuZn37), C28000(CuZn40),Copper (99% Cu) and so on 4.Free Cutting Steel:1213, 12L14,1215 and so on 5.Aluminum: Al6061, Al6063 etc 6. Other material,like nylon and plastic and so on. Surface Finishing Zn- Plated,Ni-plated,Passivated,Tin-plated,Sandblast and Anodized, Polish,Electro Painting,Black Anodize,Plain,Chrome plated,Hot Deep Galvanize(H. D. G.) ,Brass Plating,Black Oxide etc. Heat Treatment Tempering,Hardening,Spheroidizing,Stress Relieving. Manufacture Process Heading/Machining/Threading/heat treatment/plating/Baking/QA/Package/Shipping Sample We can supply the samples for free,if the samples we have in stock Lead time 7-15 working days as usual,It will based on the detailed order quantity. Carton size 36*24*16 CM &36*24*12 CM and according to customer request design Pallet size Standard Euro Pallet 110*80*90 CM After-sale service we will follow up goods for every customer and help solve problem after sales.
KMS 1400 New Generation Concrete Pipe Machine; It produces Concrete Pipes from 300mm to 1400mm in line with the demands of our customers, from minimum 1000mm to maximum 2500mm in length in accordance with Iller Bank TSE 821 specification. It is manufactured in a way to make double or triple production according to customer demands. Three molds for300mm Concrete Pipe, two molds for 400, 500, 600mm Concrete Pipes and one mold for other diameters can be connected at the same time. â?¢ Molds and Pallets with Integrated Gasket or Drop Section Gasket are produced in line with the demands from �?300mm to �?1400mm. â?¢ It provides the possibility of mass production from �?300mm to �?1400mm without crane, it produces 2 times more than the system with crane. Vibration system of the machine is with liquid oil closed circulation system. Automatic lubrication system is activated with machine operation. SKF or FAG bearings resistant to high cycles and heat are used in the vibrator. Pallets; It is produced on CNC lathes according to its dimensions and by pressing method. Manufactured Concrete Pipes are transported to the Drying area by Forklift.
Automotive Steel Coil Supplier As a supplier of automotive steel, Hunter Special Steel offers a wide range of applications and products for the transportation and automotive markets. One of our areas of specialization is rigid products and blanks with controlled profiles for the automotive industry, allowing our customers to reduce the number of adjustments made during production while increasing productivity and operational efficiency. From school buses to trains, our customers require consistent finite gauge tolerances, not only from top to edge, but also from head to tail. Automotive Steel Specifications Hunter Special Steel is a specialized supplier of steel in a variety of sizes and types for the automotive industry. Hot rolled select and oiled coils and billets Cold rolled coils and blanks Hot-dipped galvanized coils and billets Coated steel High strength steel We also offer slitting and cut-to-length services for automotive applications. Automotive Applications Automotive Steel is used in a variety of different applications in the automotive industry. Such applications include consumer and commercial vehicles, school buses, trains, heavy and light trucks, cars and airplanes. More specific applications include: Exposed bumpers Transmission and safety components Critical engine applications Engine bearings Pulleys Valve covers Truck and seat frames Chassis and wheel systems Surface critical drawing applications Pulleys Pressure vessels Airbag components
Introduction: Aluminum / Aluminium alloys have high ductility and corrosion resistance. Aluminum / Aluminium 3003 alloy has moderate strength and good corrosion resistance. The strength of this alloy can be increased by cold working. Surface Treatment: Mill finished Conditions: O,H12,H16,H18,H22,H24,H26 Packing Standard: exporting wooded pallets; The bundle wegiht not exceed 3MT. Loading:by 1x20GP, 1X20GP can load about 18~22MT Quality of materials: totally free from defects like white rust, oil patches, roll marks, edge damage, camber, dents, holes, break lines, scratches and free from coil set Shape: flat, round circle MOQ: 500KGS Delivery time: 20 days after 30% T/T payment or receiving L/C copy Application: Cookware, Cooking Utensil, Holloware, Pressure Cookware, Kitchen Disc, Cooking Pan, Fryer, Reflector of the light etc . To get more details, pls contact :� sales09(dot)exceed(at)gmail(dot)com
Outer Diameter(OD): 6mm to 762mm Wall Thickness(WT): 0.5mm - 65mm LENGTH:5.8/6/11.8/12m Pipe Standard:ASTM A312/A213/A269/B673/B674/B677/B675/B676/B690/A789/A790/A928 ASME SB163/SB423/SB444/SB622/SB677 Material: 300series:301,304,304L,,309,309S,310,310S,316,316L,321,347,347H; 400series:410,420,430,420J2,439,409,430S,444,431,441,446,440A,440B,440C. Duplex:S31803, S32250, S32750, S32760, S31500, 32001. S32003, S32304. Nickele bass alloy: N08800,N08810,N08811,N08825,N06625 Other special: S31254,N08367,N08904 Titanium alloy: TA1; TA2; TA3; TA9 Process:Cold drawn, Cold rolled, Precision Rolled; Hot Rolled; Finish:Pickled, bright annealing, polished; Application:Chemical, Food and beverage,Marine,Mining,Oil and gas, Pharmaceutical, Petrochemical, Power generation,Renewable energy, offshore engineering, ship building, paper industry, water treatment, HAVC system, boilers, heat exchangers, Aviation, funiture, OEM, Construction, Sanitary etc
Product Description The Abel Super Series Fly Reels are designed with large arbor spools. This large arbor gives great line pickup while keeping coiling to a minimum. These reels are the choice for many fly fishermen. Reel Frame, spool drag knob and foot made of 6061-T651 cold finished Aerospace grade aluminum Teflon sealed bearings: ISO9001:2000 and AS9100 Certified FAA TSO C149 Aircraft Bearings Cork Drag System is made entirely in the Abel factory: They use a superior high grade Portuguese cork with a little neatâ??s-foot oil on it Double Pawl System: Super Series reel sizes 6 and larger are built sound with therecently upgraded double pawl system. Advantages are increased reliability, back-up strength and unique as well as flexability so anglers can Interchange Large & Standard Arbors spools. Branch Office Shop Fishing Tackles Jl. Jend. Sudirman kav. 112 - 114 Jakarta - 12190 Indonesia
Diesel EN590 10 PPM is a type of diesel fuel that meets the European standard EN590 for automotive diesel oil. The "10 PPM" designation refers to the maximum allowable sulfur content in the fuel, which is 10 parts per million (ppm) or less. Here are some of the specifications for Diesel EN590 10 PPM: - Density at 15 C: 820-845 kg/m - Flash point: minimum 55 C - Cetane number: minimum 51 - Sulfur content: maximum 10 ppm - Distillation range: 90% distilled at 360-370 C - Cold filter plugging point: maximum -5 C - Appearance: Clear and bright, free from visible sediment and water Diesel EN590 10 PPM is primarily used as a fuel for diesel engines in automobiles, trucks, buses, and other vehicles. It is designed to meet the stringent emissions standards in Europe and other regions, which require lower levels of sulfur and other pollutants in diesel fuel. The use of low-sulfur diesel fuels like EN590 10 PPM can help to reduce air pollution and improve air quality, as well as reduce the emissions of greenhouse gases.
Hydroxyethyl Cellulose(HEC) CAS NO.:9004-62-0 Hydroxyethyl Cellulose (HEC) is nonionic soluble cellulose ethers, both soluble in hot and cold water. Hydroxyethyl Cellulose is a white free-flowing granular powder, treated from the alkali cellulose and ethylene oxide by etherification, Hydroxyethyl Cellulose has been widely used in paint and coating, oil drilling ,pharma, food, textile, paper-making, PVC and other application fields. It has good thickening, suspending, dispersing, emulsifying, film-forming, water-protecting and providing protective colloid properties. 1.Chemcial Specification Appearance� White to off-white powder Particle size 98% pass 100 mesh� Molar substituting on degree (MS) 1.8~2.5 Residue on ignition (%) â?¤5.0 pH value 5.0~8.0 Moisture (%) â?¤5.0� � � 2.Products Grades Product grade Viscosity (NDJ, 2%) Viscosity (Brookfield,1%) Technical Data Sheet HEC HR300 240-360 240-360 Download HEC HR6000 4800-7200 4800-7200 Download HEC HR30000 24000-36000 1500-2500 Download HEC HR60000 48000-72000 2400-3600 Download HEC HR100000 80000-120000 4000-6000 Download HEC HR150000 120000-180000 6000-7000 Download
FUXI ® CHLOROSULFONATED POLYETHYLENE PAINT Chlorosulfonated polyethylene is prepared by chlorinating and sulfonating polyethylene from the mixed gas of chlorine and sulfur dioxide, which has ozone resistance, weather resistance and anti-aging properties. Excellent acid and alkali resistance, good mechanical properties, good water and oil resistance, cold resistance, humidity and heat resistance, and chemical resistance. Types of FUXI �® Chlorosulfonated Polyethylene Paint Chlorosulfonation Polyethylene Anticorrosive Finish Chlorosulfonation Polyethylene Anticorrosive Intermediate Paint Chlorosulfonation Polyethylene Anticorrosive Primer Acrylic Modified Vinyl Perchloride Anticorrosive Finish Vinyl Perchloride Primer Vinyl Perchloride Putty The Advantages of Chlorosulfonated Polyethylene Paint Good ozone resistance Good weather and aging resistance Excellent chemical resistance Good mechanical properties Good water and oil resistance Single component, easy to apply Technical Parameter of Chlorosulfonated Polyethylene Paint Primer Universal Technical Parameters Type: Solvent type Packs: Two packs Mixing Ratio: 10:1 Solid Content by weight: 40% Density: 1.15-1.3KG/L Touch Dry: 30mins Hard Dry: 5 hours Best used for area with requirement of chemical resistance, water resistance Now the price of polyethylene floor coating is reasonable, if you want to buy the best paint for polyethylene, please contact us. If you want to know more types of polyurethane based paint, please visit our website.
PRODUCT SUMMARY This Karcher Electric Cold Water HD Series Pressure Washer easily converts from a cart to a skid with the skid feet accessory (not included) for maximum cleaning versatility and durability. This model features a commercial-duty Leuco crankcase pump (backed by a 7-year pump warranty) and a corrosion-resistant aluminum frame with flat-free tires. The low-profile handle and compact footprint makes it easy to maneuver. Bypass loop provides additional pump protection. WHAT'S INCLUDED (1) Electric pressure washer (1) 50ft. high-pressure hose (1) Spray gun (1) Lance (1) Quick-connect nozzle FEATURES + BENEFITS Insulated, fatigue-free, spring-loaded trigger gun with side-grip spray wand makes for easy point-and-shoot cleaning action Four quick-couple nozzles made of hardened stainless steel and color-coded for easy selection of spray pattern: 15�°, 25�°, 40�° and detergent Durable VRT3 unloader with bypass loop diverts water flow when trigger gun is not activated KEY SPECS Item# 104509 Brand Karcher Manufacturer's Warranty 1 year Limited Warranty Ship Weight 180.4 lbs Pressure (PSI) 1,000 Flow (GPM) 3.0 Motor Baldor Horsepower 2.0 Volts 120 Amps 20 Pump Karcher KF Drive Style Direct Gun M407 Nozzle Type Quick-connect Hose 50 ft. high pressure Coupler Size (in.) 3/8 Cart Aluminum Power Cord (ft.) 36 Max. Inlet Water Temp (�°F) 140 Chemical Injector Yes Adjustable Pressure Yes Pump Oil Type SAE 15W-40 Pump Oil Included Yes Dimensions L x W x H (in.) 41 x 22 x 25
Iron Oxide Pigment Supplier Iron oxide pigment is the second largest inorganic pigment after titanium dioxide and the first largest colored inorganic pigment. It mainly contains iron oxide red, iron oxide yellow, iron oxide black and iron oxide brown pigments with iron oxide as the basic substance. In addition, more than 70% of all consumed iron oxide pigments are prepared by chemical synthesis methods, called synthetic iron oxide, such as green iron oxide, etc. ...... We can supply iron oxide pigments in various colors. Browse the products below to find the pigment you need, or contact us if you need help. We will help you select the right iron oxide pigment for your unique needs. What are the properties and advantages of iron oxide pigments High chemical stability and physical durability. Alkali-resistant. It is very stable to any concentration of alkali and other types of alkaline materials, especially cement and lime mortars commonly used in construction, without chalking or affecting the strength of cement building components. Acid Resistance. It is resistant to weak and dilute acids in general, but is also soluble in strong acids, especially when heated and concentrated. Light resistance. The color remains unchanged under strong sunlight. Heat resistance. It is stable within a certain temperature limit, beyond which the color begins to change. As the temperature rises, the degree of change becomes more pronounced. Weather resistance. It is unaffected by climatic conditions such as cold, heat, dry and wet. Dirty Air Resistance. It is stable in any dirty gas, such as hydrogen sulfide, carbon monoxide, sulfur dioxide, hydrogen chloride, nitric oxide and other gases. Water, oil, solvent resistance. Insoluble in water, various mineral oils, vegetable oils and organic solvents such as ether, ester, ketone, etc., and impermeable. Bright and clear color, unique hue. The color of iron oxide pigment is so clear and pure that it does not need to be embellished with other organic or inorganic pigments. Excellent economic efficiency. Iron oxide pigment has high coloring power, fine and uniform particle size, which ensures its value of use, together with lower selling price, it can ensure the economic effect of users.
