Shanghai Auliss intelligent technology group co. , Ltd. is a large enterprise specializing in the design, development and production of medium-high pressure, oil-free, low-pressure, atmospheric Industrial screw compressor, screw vacuum pump and screw blower. Its air end adopts German technology, and its products have a certain reputation in the market. It has been rated as " national quality stable and qualified product" and " consumer trust the product" by the China association for quality inspection and China consumers ' association. We also have passed the" Iso9001 international quality system certification " and" CE".