stainless steel electrical telephone sockets 1,metal plate 2,polycarbonate and copper ,phosphor 3,silver contact material stainless steel electrical telephone sockets 1:Modle design,good finish,high quality 2:high quality polycarbonate and copper 3:silver contact material 4:easy installation and safe operation 5:metal plate and plastic plate can be choosen 6:spercial microllite glass panels nake ...