Kwishishini le-polyurethane lehlabathi, ii-catalysts zidlala indima ebalulekileyo ekukhawuleziseni ukusabela, ukuphucula iipropati ze-foam, kunye nokuphucula ukusebenza kakuhle kwemveliso. Njengoko i-polyurethane iqhubeka nokukhula kumashishini afana nokufakelwa kwezinto ezikhuselayo, iimoto, ifenitshala, izihlangu, kunye nokwakha, imfuno...
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