| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 972.2 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1064.14 | USD | 20251017 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 972.53 | USD | 20251017 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1254.42 | USD | 20251017 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 972.27 | USD | 20251016 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1063.86 | USD | 20251016 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1253.61 | USD | 20251015 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 971.9 | USD | 20251015 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1063.46 | USD | 20251015 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1063.07 | USD | 20251014 |