| Vendor | Spec | Unit | Price | Currency | Date |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 522.05 | USD | 20251121 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 521.82 | USD | 20251120 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 521.82 | USD | 20251120 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 522.07 | USD | 20251119 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 522.07 | USD | 20251119 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 522.19 | USD | 20251118 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 522.19 | USD | 20251118 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 522.48 | USD | 20251117 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 522.48 | USD | 20251117 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 522.41 | USD | 20251115 |