| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 507.27 | USD | 20251016 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 627.04 | USD | 20251016 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 626.8 | USD | 20251015 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 507.08 | USD | 20251015 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 506.89 | USD | 20251014 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 626.58 | USD | 20251014 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 626.7 | USD | 20251013 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 506.99 | USD | 20251013 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 506.7 | USD | 20251011 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 626.34 | USD | 20251011 |