YONCHI are a trading company specializing in the HVAC/R (Heating, Ventilation, Air-Conditioning and Refrigeration) and alloys products, such as copper fittings, manifold, all kinds of gauge, vacuum pump, condenser, compressor, valve, temperature controller, refrigerant(R22, R12, R134, R404, R410), motor, tools etc. For more information, please refer to our website www.yonchi.com