| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 946.81 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 911.48 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 848.07 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 939.94 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 947.01 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 904.61 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 911.67 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 848.26 | USD | 20251204 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 940.16 | USD | 20251204 |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 911.88 | USD | 20251204 |