PSE certification is a Japanese compulsory safety certification to prove that electrical and electronic products have passed the safety standard test of the Japanese Electrical and Material Safety Law (DENAN Law) or the international IEC standard. Japan’s DENTORL Law (Electrical Device and Material Control Law) stipulates that 498 products must pass safety certification to enter the Japanese market. Among them, 165 types of A products should obtain the diamond-shaped PSE mark, and 333 types of B products should obtain the round PSE mark.