... ) Identical particle size , low oil absorption value. 2) Reduce the cost of production.3) Good foaming effect. 4) Enhance the hardness, size ... , Super-fine Cupric Oxide and 2,4-DNT and 90% of which have been exported to Germany, America, Japan, Brazil, Chile ... good performance and ensures good quality and stabilization of products. It becomes one part of Coffer's Culture. Sanming Coffer is doing ...