| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.71 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.82 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 331.55 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 380.93 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.71 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 345.65 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 331.55 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.71 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.76 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.76 | USD | 20251031 |