夜夜高潮天天爽欧美,久久综合久久88中字幕文,完整版免费av片,神马午夜影片

· Clean Vacuum and No Pollution. Fast Pumping Down

· Superior Stand-alone Ultimate Vacuum. Unique Hydrodynamic Spiral Jacket Cooling

· Low Discharge Temperature

· Low Power Consumption.Low Vibration

· Low Noise Level. Easy Maintenance

· Lower Maintenance Cost

· Wide Range Ability of Process Vacuum and Wide Applications

LGB series variable pitch screw dry vacuum pumps can be widely used in the chemical industry, pharmaceutical industry, food industry, solar, metallurgical system, heat treatment, electronics industry, etc.