A na-ekwe nkwa na ngwaahịa Diwei ga-agafe ule ngwa ngwa a kpọtụrụ aha n'elu yana nyocha ngwaahịa tupu ebuga ngwaahịa ndị ahụ n'aka ndị ọrụ gburugburu ụwa, si otú ahụ nweta nkwado na ntụkwasị obi. Na mgbakwunye na nnwale nke ụlọ ọrụ ahụ nwere onwe ya, anyị agafewokwa usoro asambodo sitere na ụlọ ọrụ nyocha ikike, dị ka CE, ISO, UL, FCC, TUV, EK, RoHs.