| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.82 | USD | 20251023 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.62 | USD | 20251023 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.77 | USD | 20251023 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.52 | USD | 20251023 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.56 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.71 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.76 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.46 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.52 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.34 | USD | 20251020 |