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Nalane ea Polyurethane(PU) thepa le lihlahisoa
E thehiloe ke Monghali Wurtz & Monghali Hofmann ka 1849, e ntseng e tsoela pele ka 1957, Polyurethane e ile ea fetoha thepa e sebelisoang liindastering tse ngata tse fapaneng.Ho tloha ho sefofane ho ea ho indasteri le temo.Ka lebaka la bokhabane bo bonolo, mebala, elasticity e phahameng, hydrolyze resistant, serame le ho chesa ...Bala haholoanyane
