| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.9 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.9 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1171.08 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.9 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1185.19 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.9 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.58 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.4 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1184.68 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.4 | USD | 20251120 |