1. Factory direct 2. ISO 9001:2008 approved 3. High quality material, good production experience 4. Design screw and barrel specifications:45/90,45/100,50/105,51/105,55/110,55/120,58/124,60/125,65/120,65/132,68/143,70/140,75/150,80/143,80/156,92/188The above are standard specifications, we can customize according to customers' requirements.The compression ratio of screws can be designed accoring ...