Summary
Lead-Acid battery uses a chemical reaction to do work on charge and produce a voltage between their output terminals. Despite having a very low energy-to-weight ratio and a low energy-to-volume ratio, its ability to supply high surge currents means that the cells have a relatively large power-to-weight ratio. These features, alo...

Summary
A LED display, or light emitting diode display, is a flat panel display that uses an array of light-emitting diodes as the video display. An LED display panel can be either a small display or part of a larger display. They are typically used outdoors in store signs and billboards, and in recent years have also become commonly us...

Summary
RAID (originally redundant array of inexpensive disks, now commonly array of independent disks) is a data storage virtualization technology that combines multiple physical disk drive components into a single logical unit for the purposes of data redundancy, performance improvement, or both.Data is distributed across the drives i...

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Refrigerant Leak Detectors have become a crucial tool for many trade professionals. Basically any equipment that is used in air conditioning or for cooling / freezing contains a refrigerant that has the potential to escape from the coils and joints, so leak testing occurs during production of the equipment, installation (if appl...

Summary
Refrigeration Compressor is the core part of the Refrigeration system, its performance is the most important index of the Refrigeration system. Refrigeration Compressor is both a motor and pump that move the refrigerant through the system which is usually used in the refrigerator and air conditioner, Refrigeration Compressors ca...

Summary
Sifting machine is a machine used to separate the products of grain milling by means of flat sieves that make successive circular movements on a horizontal plane. The main parts of a sifting machine are the drive mechanism and the set of sieves mounted in the housing. Machines can have one or two housings, crank or self-balancin...

Summary
The pitch of a LED screen defines the distance between the pixels. Small Pitch LED Display refers to the pixel pitch of LED Display which is below 2.5mm, including P2.5, P2.0, P1.8, P1.5 P 1.2, P 1, P 0.7etc.With the development of LED display, it has been defined the pixel pitch below 2mm ?as the small pitch LED Display. In thi...

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A smart card, a type of chip card, is a plastic card embedded with a computer chip that stores and transacts data between users. This data is associated with either value or information or both and is stored and processed within the card?s chip, either a memory or microprocessor. The card data is transacted via a reader that is ...

Summary
Doorbell is a bell, chime, or buzzer outside a door that is rung to announce the presence of a visitor or caller. With the development of society, wireless visible doorbell is becoming more and more popular.
This report describes the development of the industry by upstream & downstream, industry overall and developmen...

Summary
Diboride chromium is a gay powder. For the Cr?B system, six chromium borides (Cr2B, Cr5B3,CrB, Cr3B4, CrB4 and CrB2), among them, CrB2 is the most stable compound with a melting point of 2200 oC and is a potential candidate as the structural material, hard coating on cutting tools, and protective layer on mechanical parts to res...