| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 848.02 | USD | 20251210 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 939.89 | USD | 20251210 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 939.62 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 904.3 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 911.36 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 946.69 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 847.78 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 946.81 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 847.89 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 911.48 | USD | 20251208 |