For decades China Zhejiang Shengyuan Compressor Manufacturing Co., Ltd. Quality, safety, and easy handling are especially important aspects on all ShengYuan products, Diesel Air Compressor, Gasoline Air Compressor, Engine Air Compressor, Gas Air Compressor. Up until the time when a new development goes onto the market, it undergoes exhaustive practical tests, scrupulously strict, which ensure that you go on enjoying ShengYuan products for a long time, The high quality and safety standards of ShengYuan products, diesel air compressors, 12v air compressors are confirmed year after year by the numerous seals of quality awarded by test and authority institutions:ISO9001, CE, TUV, CCC, CQC etc.