... Machinery Plant, Tangshan huida(Group) Sanitation Co., Ltd., Tangshan Hexiang(Group) Lingxiang Commerce & Trading Co., Ltd, Tangshan Hexiang Refractory Materials Co., Ltd., Tangshan Hexiang Import& Export Co., Ltd ... ones completely, is series of ceramic machinery and superfine zirconium silicate power that has ... of 580 sets of series ceramic machinery and 10000 tons if superfine zirconium silicate ...