联系人 Mr. Mbeng Nsame
PO box 83 bertri road , bertoua, Cameroon
native crystalline carbon that is the hardest known mineral, that is usually nearly colorless, that when transparent and free from flaws is highly valued as a precious stone, and that is used industrially especially as an abrasive. also : a piece of this substance.
| 国家: | Cameroon |
| 型号: | - |
| 离岸价格: | 获取最新报价 |
| 位置: | - |
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