| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1171.91 | USD | 20251015 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1171.48 | USD | 20251014 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1171.48 | USD | 20251014 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1182.75 | USD | 20251014 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1171.48 | USD | 20251014 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1171.48 | USD | 20251014 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1168.67 | USD | 20251014 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1171.72 | USD | 20251013 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1182.98 | USD | 20251013 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1171.72 | USD | 20251013 |