Izikrini eziqhelekileyo ze-polyurethane ikakhulu ziquka izikrini zomgodi we-polyurethane kunye nezikrini ze-polyurethane dehydration.Iipleyiti zesikrini ze-polyurethane zisetyenziselwa isinyithi (intsimbi yentsimbi, i-limestone, i-fluorite, i-slag yokupholisa i-furnace slag, i-coke kunye nezinye izinto ezikrwada), iintsimbi ezingezizo i-ferrous, amalahle, iikhemikhali, i-mat yokwakha ...
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