... heat pumps manufacturer in China. Populace is supplying these products for Midea, Gree, LG, Samsung, Panasonic etc. 1. Customized2. Work Pressure ... . Refrigerant: R22, R134a, R407c, R404a, R410a4. Working temperature: -30°C~120°C Our Advantages:1) Professional manufacturer, ISO9001-2008.2) More ... quality products and perfect delivery date. Branch Joints and Headers for Air conditioner