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Great Spring(Jinan Hongquan Titanium Industry Co., Ltd.) is a 15+ years experience global chemical supplier, dedicated in Titanium Dioxide(TiO2), Iron Oxide pigment(red, yellow, black, green, etc.), Water treatment(SDIC, TCCA, etc.) Silicone Oil. If you are looking for the product within these 4 areas, you will find the better one here.