1. The oil dripping structure adopts a gap sealing form, making the oil supply regulation more stable and reliable. 2. The oil supply adjustment ring can only be rotated once. The oil supply volume is basically distributed in a linear pattern. The oil supply volume can be roughly calculated based on the position of the scale ring. 3. It can be refueled without stopping the gas supply. 4. The special structure of the oil drip nozzle creates a negative pressure at the oil drip outlet, resulting in a low fogging flow rate. 5. Quick and reliable weekly connection, easy to install and use; 6. Stable pressure regulation and high repeatability accuracy; 7. Highly efficient moisture and solid particle removal function; There are three drainage forms available for selection: manual, differential pressure and automatic drainage.