Sanpar Microfilters Pvt. Ltd. Manufactures Refrigerated Oil Chilling Machine. Sanpar Microfilters Pvt. Ltd. Is an ISO 9001: 2000 company manufactures precision Engineered, Compressed Air Treatment Systems for industrial applications. The Refrigerated Oil Chilling Machine always supply OIL at constant temperature even with differing ambient conditions and differing load requests, thus ensuring optimum efficiency.