... add molecular sieve, it can absorb impurities, in this way avoid congestion and improve oil quality. Besides, two ... twice, so cooling effect will be better, in this way oil output can be guaranteed and raised. 5. ... can be equaled with one vertical condenser, in this way, the cooling result will be better than our ... The exhaust gas, it is white, no pollution, even if you put a white towel on it, you can ...