... principle. After entering into the Gas distribution system(valve core and valve bush), the compressed air is accordingly delivered to ... in mining, oilfields, construction, metallurgy, paper making, medicine, chemistry smelting and other industries, as ideal mating driving equipment for large-scale ... FAX:+86 535 6201713mobile:+ 86 13864579326www.yttashan.com ISO9001:2008 certificate piston air motor