Izikrini eziqhelekileyo ze-polyurethane ikakhulu ziquka izikrini zomgodi we-polyurethane kunye nezikrini ze-polyurethane dehydration.Iipleyiti zesikrini zePolyurethane zisetyenziswa kwisinyithi (intsimbi ekrwada, ilitye likalikalika, i-fluorite, i-slag yokupholisa i-furnace slag, i-coke kunye nezinye izinto ezikrwada), iintsimbi ezingezizo i-ferrous, amalahle, iikhemikhali, i-mat yokwakha...
Funda ngokugqithisileyo