Botou Sanyangtongtai Automation Equipment Manufacture Co., ltd is a leading manufacturer for steel plate coiling machinery, cold-bending & rolling steel plate shaping machineries and automatic production lines. the products are mainly used in steel structure industry for producing C& Z type purlin, colored wall and floor protecting steel plate, thermal insulating plate and load-bearing plate of buildings, and other complementary thin wall cold-bending shaped seel plates, expressway railings, colorful decorating and protecting steel plates for high-grade steel stucture residendces.