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                            Self-Cleaning Pre-filter for Air Compressor
                            Air contains large amount of dust, which leads to the corrosion of the equipments and shortening the lifecycle. The harmful chemicals in the dust may rust or corrode the equipments. Therefore, the aerodynamic equipments must be installed with high precision filters. HAD-SF series of self-cleaning filters are enhanced on the basis of the foreign equivalent products, while the controlling system uses the proprietary PLC controllers of the company, reaching the top standards among the domestic competitors.