| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1865.12 | USD | 20251209 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2204.23 | USD | 20251209 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2204.51 | USD | 20251208 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2261.04 | USD | 20251208 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1865.36 | USD | 20251208 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1865.75 | USD | 20251207 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2204.98 | USD | 20251205 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2261.52 | USD | 20251205 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1865.75 | USD | 20251205 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2204.98 | USD | 20251205 |