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Nhanganyaya: Nylon Sezvo Nyika Yokutanga Yese Yese Innthetic Fiber, kubvira pakuuya kwaro muma1930s, nehuremu hwayo, simba rakanyanya, kupfeka kuparara, nekukurumidza kupinza muzvinyorwa, ...

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一, kuenzanisa kwezvinhu zvekunyama zvinonyangadza nylon polyester chemosition polyamide (PA) polyethyle terephthalate (pet) yakanyanya kuwanda simba

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