... roots blower 2.energy saving 3.purify water and air and other pollutants efficiently 4.high efficiency The DSR ... center of Japan, numerical control lathe, accurate lathe and etc, and there is a domestic fist-class balance appearance CAD ... Asia, Thailand, Malaysia, South America, Australia, India and etc. Standard accessories:the inlet and outlet filter silencers, anchor bolts, baseframe, safety valve, ...