Our products include the different types of Cu-Al pips,nuts,corrugate pipes,Cu-Al welding equipments and testing equipments,Which promote the development of the substitution for copper components in refrigerator prouducts and coolong machinery products.Jinhai Cu-Al compound connection products have been applied in large scale in air conditioner manufacturers such as Hisense,Kelon,LG(Korea),Gree,Chigo and Haier,etc.more than 20million pieces in total.