12. Spandex: Synthetic fiber, ke hore, mokokotlo oa foreimi, o na le litšobotsi tsa bolelele bo phahameng, elasticity e phahameng, le ho hanyetsa acid e betere, ho hanyetsa alkali, ho hanyetsa khanya le ho hanyetsa abrasion. 13. Polypropylene: Polypropylene ke lebitso le nang le litšobotsi tsa Sechaena. Ha e le hantle, e lokela ho ...
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