... on holiday from 4th, April to 6th, April. ISO9001 prefabricated building Product specification:1)Steel frame system:Main frame: Welded ... America, America, Europe, Middle east etc. Because of good quality and good service , we get good feedbacks in the world ... deck sheet, foundation bolts, normal bolts,bracket bolts, shearing bolts, high strengthen bolts,nuts, plates, washers ,flange, tension rod ,crane ...