Changzhou Xiwangyuhua Electronics Co., Ltd. [China]

Material : steel , nickel plated or copper connect some cables and socket colour is red , blue , black ,green

Material :  steel  , nickel  plated  or  copper 

connect  some  cables   and  socket 

colour  is  red , blue  ,  black  ,green  and  yellow 

steel , nickel plated or copper 4mm banana plug