Ningbo Superior Machinery Co.,Ltd was founded in 1992,which is one of the earliest manufacturers of screw and barrel for plastic processing machine in China. We are aiming at serving small-scale corporations during our early business period and we have served more than 1000 small or middle-scale corporations producing various kinds of plastic products so far. This fact has lead to an extensive accumulation of technological”know how”and experience for us. Now, Superior machinery has developed to be a modern manufacturing factory which is equipped with the most advanced CNC machines and management systems, which has passed ISO 9000 quality management system certification, and has been assuring the successful operation thereof to enable the full-process product quality control. And till now our products have been shipped to approximate 25 countries or areas all over the world.