... system 1. Applies to palm oil, palm kernel, cotton seed oil, fish oil, lard oil, chicken oil, algal oil, linseed oil, etc.2. Main Equipment: ... electrical energy is the long-term problem. The freezing vacuum system designed by Zhengzhou Yuanyang group, adding refrigerator and ... 8°C. The capacity of vacuum pump and condensable gas, and the stability of vacuum system can be improved effectively. ...