| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 908.51 | USD | 20251015 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 936.69 | USD | 20251015 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 901.47 | USD | 20251015 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 943.73 | USD | 20251015 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 845.13 | USD | 20251015 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 844.82 | USD | 20251014 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 943.38 | USD | 20251014 |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 908.18 | USD | 20251014 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 901.14 | USD | 20251014 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 936.34 | USD | 20251014 |