1.0 Surface without gate mark for fine surface machining 2.0 Built-in valve needle and it controlled by pneumatic or hydraulic 3.0 With timing control, switching time can be controlled 4.0 Good sealing performance, the product’s surface is smooth and the production speed is very fast 5.0 Suitable for mobility plastics, manufacturing dimensions required accuracy is very high.http://www.snakehotrunner.com/