| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.73 | USD | 20251127 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.69 | USD | 20251126 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.48 | USD | 20251121 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.4 | USD | 20251120 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.48 | USD | 20251119 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.53 | USD | 20251118 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.63 | USD | 20251117 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.61 | USD | 20251114 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.5 | USD | 20251113 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.59 | USD | 20251112 |