- Gansu Sanyuan Silicon Materials Co., Ltd.
- Silica Fume, Microsilica, Densified Microsilica, Undensified Microsilica, Silica Fume for Concrete
Gansu
- Baoding Zhongbao Chemical Industry Trading Co., Ltd.
- Vinyl Resin, PVC Copolymer, Pvf, Vinyl Copolymer, Vc/VAC, Vyhh, Vmch Vmca Vmcc H15 45m, Vagh Solbin a, Polyvinyl Formal
Hebei