| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 903.24 | USD | 20251028 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 928.64 | USD | 20251028 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 921.59 | USD | 20251028 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 921.26 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 902.92 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 928.32 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 902.32 | USD | 20251024 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 927.7 | USD | 20251024 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 920.65 | USD | 20251024 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 902.45 | USD | 20251023 |