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.