Iron oxide red http://www.byhuagong.cn/ there are two natural and man-made. West said the natural red. Is essentially pure iron oxide. Red powder. As production methods and the different operating conditions, their crystal structure and physical properties are very different, the color changes to blue light in the orange to purple between. Hiding power and tinting strength are great. Density of 5-5.25. Had excellent light fastness, heat resistance, and resistance to atmospheric effects, anti-foul gases, resistant to all bases. Company to high quality, good service, low prices, red iron oxide industry in a wide range of market and won praise. Users are welcome to contact us to discuss business.