| Vendor | Spec | Unit | Price | Currency | Date |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 522.0 | USD | 20251027 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 522.0 | USD | 20251027 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 521.66 | USD | 20251024 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 521.66 | USD | 20251024 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 521.73 | USD | 20251023 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 521.73 | USD | 20251023 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 521.46 | USD | 20251022 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 521.46 | USD | 20251022 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 521.64 | USD | 20251021 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 521.64 | USD | 20251021 |