| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1131.01 | USD | 20251204 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1046.19 | USD | 20251204 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1045.88 | USD | 20251203 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1130.68 | USD | 20251203 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1045.29 | USD | 20251202 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1130.04 | USD | 20251202 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1130.6 | USD | 20251201 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1045.8 | USD | 20251201 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1045.36 | USD | 20251128 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1130.12 | USD | 20251128 |