... OK500,ED30,C907,C806,HP260 specialty chemicals--Micronized Silica Especiall for Wood coatingCounter for OK412, OK500,ED30,C907,C806,HP260 Product Details:Specifications ... flatting efficiency, precisely controlled process ensuring pore volume 2ml/g for consistent performanceb) Easy adding: in the production of the ... if it is ball milled or tri-roller milled for a long time. specialty chemicals