| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 910.05 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 945.33 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 938.27 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 846.2 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 937.87 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 909.67 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 902.62 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 944.93 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 846.6 | USD | 20251119 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 938.31 | USD | 20251119 |