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  • LED development path

    Posted February 1, 2018 by poppchina popp

    704 Views

      Electro-luminescence  in inorganic materials is the basis of LED luminescence. LED  luminescence was reported by Henry Round and Oleg Vladimirovich Losev in  1907 and 1927, respectively, Read More...

  • RCCB’s working principle

    Posted January 30, 2018 by poppchina popp

    303 Views

    Years  of operating experience at home and abroad show that the promotion of  the use of RCCB to prevent electric shock casualties, to avoid leakage  caused by a fire accident, with obvious results. Read More...