Jinxiang Tube Industry (Hedong Tuza Comprehensive Zhongxindian)

Shandong Huizhong Plastic Tube Industry (Hedong Tuza Comprehensive Zhongxindian)

Linyi Liansu General Agent Zhenhua Building Materials

Jinqiao Welding Materials General Agent

Yi Hejiaoye

Fuhua Welding Materials Daquan