Usoro ntụkwasị obi na arụmọrụ kwụsiri ike;Ụlọ plastik dị elu;Mepee mkpuchi n'akụkụ maka mmezi dị mfe;Mgbochi mgbanaka mkpuchi alloy aluminum maka mkpọchi kwụsiri ike;EMC nke ndakọrịta elektrọnik, ọrụ a pụrụ ịdabere na ya na gburugburu elektrọn;Nchekwa gburugburu ebe obibi nke ihe, RoHS asambodo.