... , ISO9001 1, Rotary Screw Portable Cummins Engine Oil Saving Air Compressor Application: Mining, Ore, Factory, construction, industry etc.Mining: air compressor work with rock drill, rock ... class.10, Operator and environmental safe3, Series Cummins or Yuchai Diesel Engine Driven Screw New Air Compressor: Model Working Pressure Volume Flow Stationary or ...