following the steel construction development, our company has been engaged in manufacturing roll forming machines for more than 12 years. we have developed more than 10 series of steel roll forming machines which can meet the requirements of all steel constructions, such as production lines for wall & roof sheet, color steel tile, c & z & w shape purlin and floor decking sheet as well as production line for all kinds of sandwich panels, curving machine for roof sheets. we also supply production lines of guardrail sheet for expressway, shutter doors, garages doors and downpipe. besides, we devoted ourselves to the research & development of various kinds of other products related to steel structure, such as hydraulic press brake machine, shearing machine, slitting machine, lift machine, gas cutting machine, drilling machine, etc.