Tongji University - China Expo Complex Commercial Center Structural Test Model — A landmark steel-structure and curtain-wall project executed by Jiangyin Changjie Intelligent Equipment Co., Ltd. The company specializes in the design, fabrication and installation of complex precision steel structures, reticulated shell structures and curtain-wall systems for museums, stadiums, exhibition centers, commercial complexes and urban infrastructure. Engineered and manufactured in-house at our 36,000 m2 production base in Jiangyin, Jiangsu.