HUZHOU HUAMAN CHEMICAL INDUSTRY CO., LTD is a pioneer and professional iron oxide pigments MANUFACTORY both and EXPORTER based in HUZHOU city ZHEJIANG province, east ***** We have a history of 12 years producing the pigments of synthetical iron oxide red, black, yellow, orange, brown and green, with high quality. Our iron oxide red pigments CAS No. is 1309-37-1, the iron oxide black pigments is 1317-61-9, and the iron oxide yellow pigments is 20344-49-4, their HS Code is 28211000. With complete color varieties, high covering force and staining rate, bright color and even granules.