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Profile: Hey-Wei Vacuum Technology Co ., Ltd designs and manufactures a wide range of high performance vacuum pumps & systems. We are an ISO 9001:2000 registered company. Our products include VA series, MB series, VAC series and canned motor. We also provide nature cooling series (500~2200 L/min). This series can be used in the situation where there is no cooling water; if collocate with booster pump, the pumping speed can reach 7000-50000 l/min. Our VA series of dry screw vacuum pumps are available in eight models. These are specifically designed for difficult applications in the chemical, pharmaceutical, food-processing and electrical industries. These are also applicable in broad range of non-aggressive industries, where a relatively high vacuum level is required.