According to customer requirements, the allowable concentration of cadmium and its compounds in casings, rubber covers, gaskets, bakelite boards, etc. is modified to ND
According to customer requirements, the allowable concentration of cadmium and its compound sleeves, rubber covers, gaskets, electric boards, etc. has been modified to ND
According to customer's requirements, the allowable concentration of cadmium and its compound casing, rubber cover, gasket, bakelite, etc. is modified to ND.