Sanpar Microfilters Pvt. Ltd. Manufactures Refrigerated Air Chilling System. Sanpar Microfilters Pvt. Ltd. Is an ISO 9001: 2000 company manufactures precision engineered, Compressed Air Treatment Systems for industrial applications. The Refrigerated Air Chilling System is used in compressed air treatment. This has transformed into standard systems of refrigeration air chillers. The Refrigerated Air Chilling System is reflected in its air chillers of capacities ranging from 5 CFM to 10,000CFM at variable pressures.