| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 938.21 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 945.26 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 846.5 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 902.93 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 909.99 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 945.26 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 938.21 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 945.26 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 846.5 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 846.5 | USD | 20251031 |