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- Jul. 2022 Hengyang Valin Steel Pipe Ferrotungsten Bidding Purchase PriceJul 12, 2022
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- Mar. 2022 Hengyang Valin Steel Pipe Ferrotungsten Bidding Purchase PriceMar 29, 2022
- Feb. 2022 Northern Heavy Ferrotungsten Bidding Purchase PriceFeb 22, 2022
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