| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 853.1 | USD | 20251023 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 867.2 | USD | 20251023 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 867.05 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 852.95 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 852.44 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 866.53 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 852.73 | USD | 20251017 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 866.82 | USD | 20251017 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 866.59 | USD | 20251016 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 852.5 | USD | 20251016 |