How to install outdoor concert stage roof truss

website:www.sztruss.com Mr Eric Email:sales6@shizgroup.com Mob/wechat:0086 137 7150 5995 WHY CHOOSE US ? a.16 years factory for truss, stage, scaffolding, barricade, etc., b.32,000 square meter area c. Gained ISO9001/CE/TUV/BV/SGS certificates for company and products d. 7 engineers for designing and develop new products and projects e. five QC staff to check from material to final products f. Over 10 CNC devices g. Over 20 welding lines