QINGDAO LONGCHANGJIE MACHINE CO.,LTD.(before named as QINGDAO CHANGJIE MACHINE CO.,LTD)is located in the world-famous port and coastal open city - Qingdao,traffic transportation has three advantages in sea,land and air. During more than 10 years, changjie staff always absorb the professional technology from domestic and overseas.Cooperate with domestic scientific research institution,devote our minds to research,development,design and manufacture kinds of extruding machineries,let our technology come up to the domestic and international advanced level.Now our company has formed in Pipe production line/Plate production line/Profile production line three series of plastic extrusion line design, manufacture and development of comprehensive ability, meanwhile we can also provide customers the auxiliary equipment, various of molds and parts processing service!In order to protect our brand, changjie brand has been registered in the China Industrial and Commercial Administration.In order to carry out scientific administration,we have passed CE and ISO international quality system certificate. In order to improve the overall quality of enterprise management, we have implemented 7S on-site management standards ... All these for improving our product quality, improving our company efficiency and supplying better service to customers!