?            Heyuan Welding Base  (K190)

?            Jiaoji 2nd Line Welding Base (K190)

?            Welding Section of Chengdu Railway Bureau (K190, K1000)

?            Welding Factory of Jinan Railway Bureau(K190)

?            Xiangfa Welding Base in Hubei (K190)

?            Sanping Welding Base in Xinjiang (K190)

?            Welding Base of Hainan East Ring (UN5-150G)

?            Welding Base of Saudi Arabia 200Bid (UN5-150G)

?            Luohuang Welding Base in Chongqing (K190)

?            Huangpo Welding Base in Hubei (K190)