CNG and DNG compressors, power and large displacement reciprocating compressor plastic bottle muffler can provide 0.5-60m3/min stable pressure and 2.5-36mpa compressed gas. They are widely used in oil recovery, gas injection, cleaning line and petrochemical process pressure, compression transmission, etc. at present, the development of medium high pressure, oil-free air-cooled diesel engine will be put into production. After continuous innovation and improvement, various technical indicators have reached the international advanced level, and the gas injection volume can reach 500-1000 cubic meters / hour, equivalent to 1.5 times of the gas injection volume of a 23 ton traditional boiler. Compared with this, the gas injection component is more scientific, flexible, can be on-board speed regulation, less supporting facilities, less initial investment, low operation cost, and obvious increase in production, which brings huge benefits to the oilfield Great economic benefits. This project is based on the original product improvement, belongs to the upgrade product, the first is advanced technology, complete functions, idle muffler, software system is perfect, can replace imported; high mechanical precision, low noise, three-phase asynchronous motor localization urgent need, great development potential, good market prospects, can meet the needs of different customers.