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Qingdao qinjiang trading co., LTD. Is a professional engaged in nodular iron manhole cover, rainwater drain, and other cast iron, cast steel trading co***ny.The co***ny was founded in April 2019. Although the co***ny was founded relatively late, the founder of the co***ny has 24 years of working experience in casting technology and strong technical design and research ability.At the same time and many excellent foundry has a close cooperation, familiar with casting technology, casting production and a varie...
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