‘’KOSTRZEWA's Boiler Mini Bio was tested at an institute in the Czech Republic with Olimp fuel. The certificate confirms that the boiler, along with use of high-quality STELMET pellets, achieves perfect technical parametres: low emissions and high efficiency.”"
Agnieszka Sadłos, P.P.H.KOSTRZEWA sp.j., Giżycko, Poland
The quality of pellets Lava and Olimp is outstanding and always constant. Our customers believe that the pellets from Stelmet are definitely better than the competition. In Poland, they have no equal when it comes to quality."
Marek Rybarski, Polmark, Wrocław
"Pellet Lava and Olimp: the first pellet in Poland which does not cause any problems!""
Iwaszkiewicz Konstanty, Ecostar, Zduńska Wola
Among many products available on the market, the pellets from Stelmet positively stands out with its quality. The advantage distinguishing the pellet is also its packaging and bag colors that attract client's eye."
Marek Górski, Dolce Vita S.C, Białystok