Our company is the first developer and manufacturer for the Box-beam Automatic welding Production Line. This production line combines the longitudinal and transverse structure, which occupies the small area and with high automatic degree. Except for the input and output. which should be transported by crane, other processes are automatically carried. The special technology, electroslag welding first, then sub-arc welding also is our company innovated technology after welding test, which not only decreases the equipment, for instance, Shanghai COSCO kawasaki, Dalian Nanhai Group, Liaoning Ante STE, Qingdao Laigang Construction, Beijing shougang Steel, Beijing Header, Hebei Xinlei, Yantai Xinmu Group, Anhui Holu Steel Structure, and so on.