... , CuCr,CuZr, CuBeNi, CuNi2SiCr has passed the authentication of ISO9001 and ISO5182. welding material:1. contains CuCr(C18200),CuZr(C15000),CuBeNi(C17510),CuNi2SiCr ... history of more tna 27 years.The quality and service of our goods are very good welding material has passed the authentication of ISO9001 and ISO5182 ...