Hlau thiab cable yas (xws li cov khoom siv cable) yog ntau yam ntawm polyvinyl chloride, polyolefins, fluoroplastics, thiab lwm yam yas (polystyrene, polyester amine, polyamide, polyimide, polyester, thiab lwm yam). Ntawm lawv, polyvinyl chloride, thiab polyolefin accounted rau feem coob ntawm cov ...
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