... turbo blower's features:1.Dual-usage: Compressor and Vacuum (suction and Discharge).2. Die-cast aluminum ADC12. IP54 protection ... , Training centers, Colleges, research institutes, state-owned enterprises and many private companies including Chinese Academy of Sciences, State Oceanic ... , Coca-Cola, Unilever. China National Petroleum Corporation(CNPC) and Inner Mongolia Yili Industrial Group Co., Ltd.