... structured project covers a building area of about 21930 square meters; the roofing adopted three continually cross structure which span is ... 27 meters.Nearly 1200 tons of steel are used in the ... : Mr. Ying JiangFactory InformationFactory Size: 50,000-100,000 square meters Factory Location: No. 27, Linhai Road, Zhenhai, Ningbo, Zhejiang, ...