... research nd development of three kinds of filter applied in refrigeration compressor,air intaking filter ,oil filter,gas-oil seperation filter ... .Wanhe produces have been applied widely to refrigeration compressor of many famous brands.Wanhe company is OEM for ... DB,Midea,Gree,Mc Quay,SANY,Bingshan,Moon. SamplesCertification Refrigeration line filter element D-48