1. Oil-water separator & plate-and-kframe filter press in environmental protection & sewage treatment. 2. Shipping industry : to pump oil-water, scrap, oily water, etc. 3. Petroleum industry: to transfer crude oil, mixture of crude & water, mixture of coal gas & water. 4. Medicine & daily use chemistry: transfer thick liquid, emulsified liquid and cream cosmetics. 5. Food can industry: pump thick starch, cooking oil, honey, syrup, cream or fish paste. 6. Brewing industry: delivery thick ferment slurry, dregs of cereal products and various of sauces. 7. Construction industry: pump cement mortar, lime slurry, paint or other pasty liquid. 8. Mining industry: It can transfer the ground water with solid. 9. Chemical industry: pump suspension, oil & fats, colloid slurry or adhesives. 10. Printinng & papermaking: to transfer high viscosity painting ink, high polymer plastic & paper pulp. 11. Industrial boiler & power plant: pump water-coal-slurry.