Diann Bao, Inc. Was established in 1988 and since then has focused on designing and manufacturing of linear air pumps for aerobic wastewater, sewage / septic treatment and environmental systems. After 2005 we stepped into the making of OEM and ODM vacuum pumps for a broad range of medical, laboratory and industrial fields. AirMac, the brand of Diann Bao is reputed to reliable, highest quality, and energy saving. We have long been recognized by leading companies from worldwide; especially in Europe and USA. Currently, we are seeking agents or distributors. If you are interested, please contact us for the best offer! We are looking forward to cooperating with you.