Excellent thermal oxidation stability to prevent deterioration of lubricating oil under high temperature. Good material adaptabilityto avoid leakage during system use. Excellent heat conduction performance reduces operating temperature of the compressor . Excellent resistance to high temperature coking and anti-coking performance,increase safety during operation. Good lubricity, protect the compressor and reduce wear. Excellent high and temperature performance. to ensure the the normal operation of the system within a wide temperature range.