China Good Quality Cheap 7-13 Bar Rotary Twin Screw Type Air / Gas Compressors. High Transmission Efficiency: Toothed V-belt ensures gear drive and transmission efficiency over 98%. Low Oil Consumption: Precise spin-oil separator minimizes oil consumption and guarantees gas purity. Premium Motor Protection: TEFC IP54/IP55 motor with Class F insulation protects against dust and chemicals. High Filtration Efficiency: Two-stage air filter achieves up to 99.9% efficiency even in heavy-duty environments. Automatic Belt Tensioning: Flexible belt auto-tensions to minimize pressure/power loss and enhance efficiency. Durable Components: Stainless steel hoses and high-quality aluminum coolers ensure long service life.