| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 986.29 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1303.31 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 986.62 | USD | 20251017 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1303.75 | USD | 20251017 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1303.4 | USD | 20251016 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 986.36 | USD | 20251016 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 985.98 | USD | 20251015 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1302.91 | USD | 20251015 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1302.43 | USD | 20251014 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 985.62 | USD | 20251014 |