stainless steel Gas-liquid filter material:ss,galvanized wire,bronze wire,etc. filter:hepa filter certificated:ISO9000:2001 stainless steel Gas-liquid filter Material: stainless steel(AISI 201,202,301 ... evaporation and filtration to clear up the fog drip and liquid form in petroleum, chemical, fertilizer, medicine, dye, metallurgy, machinery, construction ...