| 钽铌矿买家 |
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| | Dear sir, We're looking for a long term supply for Tantalum-Niobium ores in which Ta 5.0% min and Nb2O5 55% min,' this grade ores can be used directly without concentration, the monthly shipment...
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| | | | | Please, forward details of columbite to me. I need your price quotes and columbite content. I will also like to speak with some of your references.
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