Nanpi Huatong Roll Forming Machinery Manufacturing Factory. is a leading manufacturer of roll forming machinery in China, established in 1992, we are engaged in research and development, production, sales and after-sales service of roll forming machine, including metal roof and wall sheet machine, floor deck machine, c and z purline machine, glazed tile machine, ridge tile machine, door frame machine, decoration panel machine, highway guardrial machine and sandwich panel machine and so o