Nanjing Mangrove River Stones Factory's  products are widely applied in Black River stones
the fields of water purification, sewage treatment, landscaping, ceramics, precision casting, papermaking, grinding, chemical,  
Brown River stones
monocrystalline silicon and etc. Since being put on the market in 1988?s, our products are well liked by customers. Our products have been exported to more than 20 countries.