We are the leader company which in breathing compressor industrial in china ,and focus on the high pressure compressors&＃39; manufacturer ,study and sales ,Even ours products have the CE CCS certifications ,and ours products mostly apply for the fire and diving industrial .Besides ,we also can do OEM for many customers ,and we have the great and good aftersales service ,so u can ensure to buy our products .And we also have the place for our products training and testing .so its quality no need to say .The most important thing is ,we have our factory ,and located at ningbo ,and there we mostly used for produce ,manufacturer and design .While shanghai is most for selling center .