| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 987.57 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1305.0 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1304.14 | USD | 20251024 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 986.92 | USD | 20251024 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1304.32 | USD | 20251023 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 987.06 | USD | 20251023 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 986.89 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1304.1 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1303.31 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 986.29 | USD | 20251020 |