Kugwiritsa ntchito kwakukulu kwa zinthu zatsopano za polyurethane Masiku ano, zinthu zotchinjiriza za polyurethane zimadziwika kwa aliyense ngati zida zotchinjiriza, zomwe zimagwiritsidwa ntchito kwambiri pakutchingira khoma, kutsekereza zitoliro malo awiri akulu, monga mapaipi amafuta, mapaipi agesi ndi kutsekereza khoma lanyumba.Polyurethane kutchinjiriza zitsulo p ...
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