| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.76 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 345.65 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 380.92 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.7 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.76 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.7 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.81 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 331.54 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 345.42 | USD | 20251024 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.52 | USD | 20251024 |