Shandong Zhangqiu City Marriott Machinery Co. Ltd. ( the first machinery factory Zhangqiu City, founded in 1996 ), is a high-tech enterprise set Branch, workers, trade in one, mainly engaged in WHR roots blower series, L series, MJ series Roots blower roots blower, vacuum blower ( roots vacuum pump ), manufacturing and sale of high pressure series of Roots blower and other mechanical equipment. The leading product " Marriott " roots blower has successfully passed the ISO9001:2000 quality management system certification, and won the " Shandong famous brand product " title.