| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 940.16 | USD | 20251204 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 947.22 | USD | 20251204 |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 911.61 | USD | 20251203 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 904.54 | USD | 20251203 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 939.88 | USD | 20251203 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 946.94 | USD | 20251203 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 848.01 | USD | 20251203 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 847.53 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 911.09 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 904.03 | USD | 20251202 |