The DSR Series Roots Blowers are the leading products of the company, adopt the advanced technology of Japan, its flow is 0.3m3/min-56m3/min, the pressure is from 9.8Kpa to 56.8Kpa. It has 7 models in all, 70 specifications, the main characteristic of our air blower is small volume, light weight, flow strong, noise small, steadily reliable operation. This air blower is mainly applied to such trades as dealing water, air transporting, mine, vacuum packaging, aquaculture and etc. In order to guarantee the quality of the products, our company purchases more than 20 sets of  large-scale and leading competence producting and checkout equipments such as BTD-110R16 machining center, Model WHQCNC130 machining center of Czech, Model MCH80011 machining center of Japan, numerical control lathe, accurate lathe and etc, and there is a domestic fist-class balance appearance CAD design center. Our products accounted for 70 percent of the market share In China and are exported to some countries in Southeast Asia.