12. Spandex: Sintetiki okun, ti o ni, awọn fireemu mojuto, ni o ni awọn abuda kan ti ga elongation, ga elasticity, ati ki o dara acid resistance, alkali resistance, ina resistance, ati abrasion resistance. 13. Polypropylene: Polypropylene jẹ orukọ pẹlu awọn abuda Kannada. Ni otitọ, o yẹ ki o...
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