O yẹ ni polyethylene iwuwo iwọn-giga ti Ultra-giga pẹlu iwuwo 0.88 G / CM3, ati Sheitang jẹ polyymytylethylethylethylethyline ti o to 1.5 g / cm3. O le ṣe iyatọ nipasẹ iwọn iru kanna ati ọwọ kan. Eyi pataki julọ ni SEIgang, lakoko ti ekeji jẹ Up.
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Gbólólólóhùn Asiri: Asiri rẹ ṣe pataki pupọ si wa. Ile-iṣẹ wa ṣe ileri lati ṣe sọ alaye ti ara ẹni si eyikeyi ifihan pẹlu awọn igbanilaaye rẹ.
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Gbólólólóhùn Asiri: Asiri rẹ ṣe pataki pupọ si wa. Ile-iṣẹ wa ṣe ileri lati ṣe sọ alaye ti ara ẹni si eyikeyi ifihan pẹlu awọn igbanilaaye rẹ.
