There is a full automatic line for making the duct connector, the first is for punching the hole, and then is for connection the cloth and the steel strip
Shanghai Metal Forming Machine Co.,Ltd.
Building D ,299 Tangming Rd,Li ta hui,Songjiang district,Shanghai,China
Tel:+86-21-57842040,57842050 Fax:+86-21-57841819
E-mail:pan@tubemachine.com sales@tubemachine.com