SBKJ SPIRAL TUBEFORMER Is Based In The Yangtze River Delta, Nearby Shanghai,China. Our Company Is A National New High-Tech Enterprise Which Is Specialized In The Development And Manufacture Of Machines,Such As Tube Forming Machines , Plasma Cutting Machines , For The Production Of Round Ducting And Fittings In Sheet Metal, Mainly For The Climate And Ventilation Industry. We Have Gotten The Certificates Of ISO9001:2000 And Ce. Our Customers From More Than 60 Countries In The World.