| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 927.83 | USD | 20251023 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 920.78 | USD | 20251023 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 927.68 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 902.3 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 920.63 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 901.75 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 927.11 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 920.07 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 920.38 | USD | 20251017 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 927.43 | USD | 20251017 |