Bimodal PE possesses excellent properties.To further expand market, our efforts should be made in the fields of research, development and production.
英
美
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雙峰聚乙烯具有優(yōu)異的性能,為進(jìn)一步開(kāi)拓市場(chǎng),我國應著(zhù)力開(kāi)展這方面的研究開(kāi)發(fā)生產(chǎn)工作。
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国内精品美女A∨在线播放xuan