serat alami = kapas, kapuk, rami(tumbuhan), serat protein dari bulu domba, sutera (hewan), mineral asbestos (mineral).
serat sintetis = rayon, polyester, dakron, nilon
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serat alami = kapas, kapuk, rami(tumbuhan), serat protein dari bulu domba, sutera (hewan), mineral asbestos (mineral).
serat sintetis = rayon, polyester, dakron, nilon