. ▁The ▁company ▁has ▁used ▁these ▁research ▁results ▁in ▁its ▁product ▁development ▁processes , ▁while ▁giving ▁special ▁attention ▁to ▁sust ain able ▁development ▁practices ▁by ▁foc using ▁on ▁the ▁needs ▁of ▁customers ▁and ▁environmental ▁issues . ▁ ▁The ▁company ' s ▁traditional ▁fire place ▁products , ▁N un na U uni ▁fire p laces , ▁are ▁built ▁from ▁M amm ut ti St one ▁soap stone ▁and ▁the ▁fire p laces ▁are ▁produced ▁by ▁employ ing ▁the ▁Golden ▁Fire ▁clean ▁burning ▁process ▁and ▁recent ▁innov ations ▁in ▁product ▁development . ▁These ▁practices ▁have ▁helped ▁the ▁company ▁to ▁produce ▁products ▁that ▁combine ▁en hanced ▁heat - pres ervation ▁qual ities ▁with ▁smaller ▁size ▁and ▁total ▁mass ▁weight ▁of ▁fire place ▁products . ▁Such ▁product ▁enh anc ements ▁are ▁especially ▁benef icial ▁for ▁clients ▁who ▁want ▁to ▁use ▁their ▁living ▁spaces ▁more ▁efficiently ▁and ▁are ▁looking ▁for ▁a ▁heat - pres erving ▁but ▁small ▁fire place ▁for ▁their ▁home . ▁The ▁new ▁form ▁factor ▁of ▁fire p laces ▁su its ▁modern ▁living ▁spaces ▁in ▁both ▁its ▁measurements ▁and ▁heat ▁production ▁qual ities . ▁ ▁Sign ific ant ▁events ▁in ▁company ▁history ▁▁ 1 9 8 2 ▁ ▁Ju h ani ▁Le h iko inen ▁founded ▁N unn al ah den ▁U uni ▁O y ▁at ▁N unn an la ht i ▁in ▁Ju uka .. ▁ 1 9 8 6 ▁ ▁The ▁company ▁began ▁its ▁sales ▁exports ▁and ▁a ▁product ▁development ▁project ▁that ▁aim ed ▁to ▁produce ▁a ▁clean ▁process ▁for ▁burning . ▁ 1