The specification of G-12 to G-16 are used to cleaning of large and medium cast steel, cast iron, forging goods, steel products pretreatment of rubber sticking etc. And G-18 to G-40 are used to stone-stock cutting, grind processing, pretreatment of rubber adherence, casting preneatment of steel plate container, steel plate on hull, showering od medium and small-sized, cast steel, cast iron, and forging goods etc. Also G-50 to G-120 are applied to rust-off and electroplating pretreatment of steel wire, wrench and steel tube, and showering of precise foumdry goods(such as the bead of golf club)