... powder, CaCo3 1) Identical particle size , low oil absorption value. 2) Reduce the cost of production.3) Good foaming effect. 4) Enhance the ... hardness, size stability, fire-retardantness, glossiness of products.5)Used ... , Super-fine Cupric Oxide and 2,4-DNT and 90% of which have been exported to Germany, America, Japan, Brazil, ...