| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 451.23 | USD | 20251023 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 406.1 | USD | 20251023 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 401.87 | USD | 20251023 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 401.8 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 406.03 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 451.15 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 450.88 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.79 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 401.56 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.93 | USD | 20251017 |