Kwicandelo lezinto zoshishino ezitshintsha rhoqo, ii-hydrocarbon resins ziye zaba yinxalenye ebalulekileyo kumashishini ahlukeneyo. Ezi khompawundi ziguquguqukayo, ezivela kwi-petroleum, ziyaziwa ngeempawu zazo zokuncamathelisa ezibalaseleyo, ukuzinza kobushushu, kunye nokumelana neekhemikhali. Njengoko amashishini eqhubeka...
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