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. 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. 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 extrusion. Every year we can deliver more than 40000 sets of different screws and barrels. Tongda name today equals
to trustworthiness in 11 brand including but not limited to Haitian, Milacron, Engle, Sumitomo, Tederic, Hwamda, Yizumi, Haixing,
Log, Haixiong, Haida.