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Silver White Vermiculite(Raw), Golden Vermiculite(Raw), Bamboo Charcoal Nano Powder, Bamboo Charcoal Powder, Tourmaline Necklace, Mica Powder, Tourmaline, Tourmaline Nano PowderTianjin Hongyan Mining is a comprehensive commercial enterprise which specialize in produce and sale nonmetal mineral, light colored metal, chemical original material, building original material, resist fire material, water dispose, environmental protection ...