| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1867.41 | USD | 20251211 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 2263.53 | USD | 20251211 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2206.94 | USD | 20251211 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2204.85 | USD | 20251210 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2261.39 | USD | 20251210 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1865.65 | USD | 20251210 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2204.85 | USD | 20251210 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2204.23 | USD | 20251209 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2260.75 | USD | 20251209 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1865.12 | USD | 20251209 |