Originally from a spare parts pocessing enterprise for foreign trade, the DEMAGE company has gradually developed into a specialized double screw manufacture enterprise. The company strictly passes ISO9001;2000 quality control system. Our products have undergone a long time use from the domestic and foreign name brands plastic enterprise. According to the national authority test centre examination and the expert inspections, each technical specification of our products has achieved or surpassed the national standard. the DEMAGE staff and its domestic and foreign services teams, obey the ROHS instruction and provide the best quality service of international level. Quality is the survival basis for an enterprise. With strict and scientific quality management system, we ensure each process have to achieve the standard and each detail have to be perfect. We try our best to give the best service to every customer. OUR TENET: Resources saving for the country, Lead ship for the colleagues, More benefits for thr customer, More opportunities for the stuff, More profits for the enterprise and to create a harmonious prosperous society. Main products: Super- hard Conical Twin Screw&Double Hole Cylinder Super- hard Parrel Twin Screw&Double Hole Cylinder Bimetallic Screw& Cylinder Super- hard Screw&Barrel for Rubber Machine. Super- hard Screw&Barrel for Extruder Machine Super- hard Screw&Barrel for Injection Machine Extruder machine