| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 910.09 | USD | 20251119 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 903.04 | USD | 20251119 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 945.37 | USD | 20251119 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 938.52 | USD | 20251118 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 846.79 | USD | 20251118 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 945.58 | USD | 20251118 |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 910.3 | USD | 20251118 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 903.24 | USD | 20251118 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 847.27 | USD | 20251117 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 903.75 | USD | 20251117 |