... Antiseismic 5. Light weight Hangzhou Weidu Steel Structure Co., LTD is located in Tonglu, Hangzhou and occupys an ... , HC, OT etc.)Hangzhou Weidu Steel Structure Co., Ltd is a privately-owned steel construction company of ... , snow load, raining condition, geological condition, and other special Requests. Dimension: length, width, height. Place of the ... s QC management certificate: Aluminium alloy window