Locking machine is the most basic production machinery, air duct can be achieved by simple adjustment of a machine can complete the joint seams, single flat seams, vertical seams, the C-type cuttings, and elbow seams. The company produces / locking machine plane pressure bearing, you can avoid the wear of the side panels, extending equipment life, and to ensure the seams forming stable. In addition, I have high with seams, machine, wheel material of GCr15.