| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1065.99 | USD | 20251125 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1256.23 | USD | 20251124 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 973.93 | USD | 20251124 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1065.68 | USD | 20251124 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 973.54 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1065.26 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1255.2 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1064.81 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 973.13 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 973.59 | USD | 20251119 |