... build truss 4,long history factory,good credit Material size details: 150*150mm,200 * 200mm,300*300mm, ... alloyFrame :4,3,2 Type: 4,3,2. Material: Aluminum 606,160,636,082 Head (diameter * thickness ... certificatedRemark:we are professional manufacturer of truss, we design, making-up, setting-up, according to your require ... , we can design the most suitable truss for you. If ...