Zhoushan is famous for the screw and barrel, there are several famous brands in our city.As a memeber of plastic machinery mfg, we always devote ourselves to the high quality products and best after-sales service, to keep long business relationship with customers. As an OEM and ODM,we have professional engineers to do the design, manufacturing, quality control. We are one of the leaders to design the iron-based bimetallic barrel in the year 2009. With the advanced vacuum sintering technology, we design the nickel-based alloy screw and barrel. We have machining center with high precision CNC screw root diameter grinding machine, to guarantee the quality. Hope our products and after-sales service can give you best support here.