My company's newly developed automatic air valve production line, is the use of frequency control, precision leveling, automatic punching, double rolling forming, servo folding, precise positioning. The company's main products are: automatic high-speed precision leveling and unwinding production lines, automatic air duct production line series, automatic plasma cutting machine series, common plate flange ( TDF ) forming machine, inserting flange ( TDC ) forming machine, Automatic spiral duct machine, hydraulic elbow forming machine, automatic folding machine, bite mouth machine, coiling machine, shearing machine and all kinds of cold rolling molding equipment. Stainless steel Handle,Refrigerator Handle,Oven Handle,Conceal Handles,Folding Handle NINGBO DAIKE INTELLIGENT TECHNOLOGY CO.,LTD , https://www.daker-hardware.com