... Station, Underground,Coal-shed, Conference Center Steel Sturcture & Net Space FrameShanghai Win-Win Industrial Co., Ltd specialized in ... installation of bolted ball joint net frame, welded spherical joint net frame, plate connection net frame, tubular joints steel structure ... board, GRC(Glass Reinforced Concrete) board, glass sunlight-roof, etcOur Steel Structure applies to Structure Roofing of Airport ...