| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 380.43 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 345.2 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.25 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.34 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.37 | USD | 20251017 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.41 | USD | 20251017 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.41 | USD | 20251017 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.41 | USD | 20251017 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.37 | USD | 20251017 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 331.22 | USD | 20251017 |