The medium of our main reciprocating piston compressors is air, nitrogen, oxygen, acetylene, hydrogen, coal gas, oil gas, natural gas, carbon monoxide and carbon dioxide etc. And their displacement: 0.1-400m3/ min, discharge pressure: 0.1-16.5 MPa. Our compressors are sold to more than 30 provinces (autonomous regions) of china, and more than 20 countries and regions abroad, such as America, Canada, Russia, eastern Asia, Southeast Asia, middle Asia, Africa and so on.