Shanghai compressors ltd., a modern technical enterprise specializing in the development and manufacture of medium- and high-pressure compressors, was established in 2002. The main products are high-pressure air presses, air-respirators inflating pumps, high-pressure gas compressors, and work pressure up to 45 mpas. The products are used extensively in the fields of fire protection, diving, sports, defence, aerospace, petrochemicals, medicine, naval vessels, marine engineering, gas-class detection, electricity, gas, precision instruments。