EC21 Buying Leads Catalogs - r o water filter http://importer.ec21.com/buy_leads/r o water filter.html Buy WATER COOLER, R/O WATER COOLER, FILTRATION, FILTERhttp://www.ec21.com/offer_detail/Buy_WATER_COOLER_R_O--2067227.html1.compressor : Origin of korea, Samsung compressor or daewoo brand. 2.220Vx50HZ 3.R134A, Green gas 4.Cold water tank ; 20080109