... 20t gantry crane, Gantry-type NC planer drilling machine, Automatic numerical control, large hot galvanizing line, Large assembly platform ... iron drilling line, 315 4-column press machine, Automatic seam-suturing submerged-arc welding center, Straight flange welding ... , Excellent Iron Tower Provider of China Unicom, Quality Management System Certification, Permit for Safety in Production, Member entity ...