Zhejia jiacheng plastic machinery co.,LTD(zhoushan tongda plastic machinery co.,ltd), has been established in the year 1990, as a workshop producing spare parts to plastic industry. A workshop became an innovative and constantly-developing company. It created a technical office, which constantly develops by courtesy of its experienced staff. Cooperation with raw material producers brought experience and knowledge, new technology and design for the technical office, and the ability to generate suitable solutions for the complex problems of customers. From day one, we focused our development power on barrel and screw production.On the range of products we found: barrel and screw, plasticizing barrel and screws, barrel and screw for injection, barrel and screw for extrusion, conical screw and barrel, twin parallel screw and twin parallel barrel, barrel and screw bimetallic, screw coated, corotating screw and barrel, screws and barrel for extruders, screws and barrels for injection machine, monoscrew for extrusionEvery year we can deliver more than 40000 sets of different screws and barrels.Our aim is to achieve higher wear resistance and longer work life in our products with heat treatment and surface coating variety. To achieve better performance and lower energy consumption by courtesy of design and high processing sensitivity. Tongda name today equals to trustworthiness in 11 brand including but not limited to Haitian, Milacron,Engle,Sumitomo,Tederic,Hwamda,Yizumi,Haixing,Log,Haixiong,HaidaOur mission is to become an establishment, which has a corner on the constantly developing and self-renewing international plastic industry market, with our technical staff, quality approach, and technology capacities.