| Vendor | Spec | Unit | Price | Currency | Date |
| Hangjin Technology Co., Ltd. | China national standards | MT | 1013.3 | USD | 20251001 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 1076.63 | USD | 20251001 |
| Qingdao Chengxin Hongfeng Chemical Co., Ltd. | China national standards | MT | 1069.59 | USD | 20250930 |
| Shandong Yuxuan Chemical Products Co., Ltd. | China national standards | MT | 1294.77 | USD | 20250930 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1203.29 | USD | 20250930 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1203.29 | USD | 20250930 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1203.29 | USD | 20250930 |
| Shinghwa Advanced Material Group Co., Ltd. | China national standards | MT | 1203.29 | USD | 20250930 |
| Shandong Jinling Chemical Ao.,ltd | China national standards | MT | 1203.29 | USD | 20250930 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1210.33 | USD | 20250930 |