... .With four-side panels easy open design,replacement of engine oil and filter can be done with one side ... As the inlet air Pre-filter mesh can be disassembled and cleaned,the unit is cleaner and engine oil&filter ... 6 series as follows: directly driven air compressor, belt driven air compressor, gas driven air comprssor, diesel driven air compressor, screw air compressor, and air pump. The plant area of ...