... papermaking, synthetic detergent, soap, adhesive fiber, artificial silk and cotton goods in light textile industry, Pesticides, dye, ... in chemical industry. Petroleum drilling, refining petroleum grease and purifing in petroleum industry. National defense industry,mechanical industry ... and so on.Packing:25kg PP bag with PE liner for flake and pearl.200kg or 250kg drum for Solid. caustic soda pearls and ...