| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1179.56 | USD | 20251129 |
| Shandong Jinling Group Co., Ltd. | China national standards | MT | 1073.61 | USD | 20251129 |
| Shandong Jinling Chemical Ao.,ltd | China national standards | MT | 1207.81 | USD | 20251129 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 1080.68 | USD | 20251129 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1214.88 | USD | 20251129 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1175.32 | USD | 20251129 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1257.26 | USD | 20251129 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1257.26 | USD | 20251129 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1214.88 | USD | 20251129 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1214.88 | USD | 20251129 |