Yangzhou Hey-wel Environmental Equipment Co.,Ltd established in2005 is a subsidiary of Hey-wel Machinery Co.,Ltd which have been manufacturing three-lobe roots blowers since 1988 and also is the first one to produce Roots series blowers.Hey-wel keep his steps in research and development for innovative products .With the result of Ev series which have won great recognition from the our customers,we have more confidences of our own capacity to satisfy the demands of global market. To meet social demands in various fields of environmental protection,power generation, chemical project,foodstuff industry,waste water treatment and so on,we have successfully brought in a large range of vacuum pump,submergible pump and ring blower .