| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 438.27 | USD | 20251204 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 438.14 | USD | 20251203 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 438.11 | USD | 20251201 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 437.92 | USD | 20251128 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 437.98 | USD | 20251127 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 437.88 | USD | 20251126 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 437.2 | USD | 20251120 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 437.41 | USD | 20251119 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 437.51 | USD | 20251118 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 437.51 | USD | 20251118 |