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