... coating Counter for OK412, OK500,ED30,C907,C806,HP260 specialty chemicals--Micronized Silica Especiall for Wood coatingCounter for OK412, OK500,ED30 ... coating, such as synthetic and natural leather, decorative materials3) Main technical data : a) SiO2 content: 99.3% min. b) Oil absorption ... milled or tri-roller milled for a long time. specialty chemicals