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With a large pumping speed in a wide pressure range;Fast start, can work immediately;Not sensitive to dust containing pumped gas and water vapor;Rotor without lubrication, no oil pump cavity;Small vibration, rotor dynamic balance condition is good, no exhaust valve;A small driving power, mechanical friction loss;Compact structure, small occupation area;Operation and maintenance cost is low.Therefore, the roots pump is widely used in metallurgy, petroleum chemical industry, papermaking, food, electronic industry.skype : lk-bt-9 QQ : 402594218 yahoo messenger :vicambery
