... better service 4,passed ISO9001:2008 Company ProfileXinxiang Wanhe Filter Co.,Ltd specialises in the research ,manufacturement and ... of three kinds of filter applied in refrigeration compressor,air intaking filter ,oil filter,gas-oil seperation filter .Wanhe produces have been ... of many famous brands.Wanhe company is an excellent filter supplier of many famous deomestic compressor manufactuer such ...