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  • There is huge room for development of my country's plastics industry

    Plastic products are a general term for daily necessities and industrial products that are made of plastic as the main raw material. The emergence of plastic has brought great convenience to mankind. ...

  • Color LED light principle

    The full-color LED light is a new type of LED phantom light. It adds a professional white light lighting function on the basis of the phantom LED light. It can not only provide professional lighting w...

  • The principle of twinkling lights

    Strings of fairy lights are connected in series. However, the structure of the filament inside the lantern is different from that of ordinary lamps. A thin metal wire coated with copper oxide is conne...