Shanghai Quanmi Mechanical Sealing Co., Ltd.
Suqian Changen New Materials Co., Ltd.
Tangshan Mingwan International Trade Co., Ltd.
Hebei Sanyong New Material Technology Co., Ltd.
Shandong Rayman Pipe Co., Ltd.
Tianjin Iking Gerui Business Co., Ltd.
Tongxiang Jiasheng Plastic Products Co., Ltd.
