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lIn May 2016, Qirui Te obtained the certificate of Safety Production Standardization Grade 2 Enterprise;
Both ac hose are compatible with most common refrigerants including R12 and R134a.
Quality of Hoses: Use high-quality, automotive-grade air conditioning hoses that are designed for the specific requirements of bus air conditioning systems. Quality hoses will have better resistance to pressure, temperature, and refrigerant chemicals.