| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 551.74 | USD | 20251211 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 551.21 | USD | 20251210 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 551.06 | USD | 20251209 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 551.13 | USD | 20251208 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 551.24 | USD | 20251205 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 579.64 | USD | 20251204 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 579.47 | USD | 20251203 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 579.15 | USD | 20251202 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 579.43 | USD | 20251201 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 579.19 | USD | 20251128 |