Songhu specializes in the production of fully automatic, all kinds of highly precision extrusion line for 5 years. about the 3D printer filament extrusion line we are the first one in China. Songhu has more than 60 redundant precision extrusion machines which took professional engineers nearly 4 years to build, and received nearly 100 domestic and foreign customers' experience and feedback. Our customer are widely from all over the world, including Spain, Russia, India, Korea, Thailand, T