1,Easy handling 2,five kinds of shape 3,Deep groove ball bearing,wihch can prolong service life I plant the seams, is a versatile machine and change a variety of models to meet different duct shapes made of bone type, Processing board thick scope 0.5-1.2 millimeter, heavy series processing scope 0.8-1.5 millimeter, rolling wheels can freely change according to customer requirements. All ...