Shandong Sanniu Machinery Co.,Ltd is professional manufacturer for three lobes roots blower .also name positive displacement blower. Our company has been established in 2004. We have more than 10years experience for making three lobes roots blowers in China. It is an advanced development in field of rotary type roots blower's business and technology. If you are going to wholesale vacuum pump, vacuum chamber, rotary valve, roots blower, sewage treatment plant and check the price with one of the most famous vacuum pump manufacturers and suppliers in China, please feel free to contact Sanniu Machinery.