| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.46 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 380.66 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.46 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.56 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 331.31 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 345.41 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.29 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.25 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 380.43 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.29 | USD | 20251020 |