... manufacturer in China. Populace is supplying the heat exchangers for Midea, Gree, TCL, LG, Samsung, Panasonic etc ... , 31.75x27.5mm, equilateral triangle arrangement.7. Suitable for R134a, R22, R404a, R407c refrigerant and so on. ... 20 people with many years of experiences. 4) Three- step Quality control. Inspect the raw material, unfinished ... copper tube shell and tube heat exchanger for air conditioner