FELLER d.o.o. is a company specializing in water treatment. Feller d.o.o. was established in 1992. In the beginning our company designed the energetic installations and later we were consultants to The Dow Chemical Co. for ion exchangers and membranes. 1997. we have started the production of water treatment plants. Licence for UP.CO.RE. (UPflow COunter-current REgeneration) regeneration technology for ion exchangers.
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