Qingdao Long changjie machinery 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,Long 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.