... handle thanks to light,compact elements. LED/speaker/stage truss system with roof Specification1.Section: square 400×400mm2.Main tube: od ... .Certification: CE and SGS certificated7.Shape : square8.The main size:300*300mm, 300*400mm,350*350mm,400*400mm , 450* ... No.2, Xinke Industrial Zone, Junhe Street, Baiyun District, Guangzhou, ChinaTel 86-20-86098139 QQ:2460617498 LED/speaker/stage truss system with ...