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无缝管担当起开发高技术高附加值产品的重任。
The seamless pipe is produced as high additional value product.
youdao
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名牌产品之所以有高附加值，关键于文化；
The reason brand-name products with high added value, key in the culture;
youdao
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名牌产品之所以有高附加值，关键于文化；
The reason brand-name products with high added value, key in the culture;
youdao