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Qingdao Yingli welding plant to carry out the importance of welded steel pipe forum

In the discussion of the importance of welded steel pipe, Qingdao Yingli welding plant chairman describes the importance of welded steel pipe, to encourage all employees to work together, the good quality, to produce more qualified welded steel pipe return to the community.

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Qingdao Yingli welding plant to carry out the importance of welded steel pipe forum

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