| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1862.3 | USD | 20251101 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2200.9 | USD | 20251101 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 2257.34 | USD | 20251031 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2200.9 | USD | 20251031 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1862.3 | USD | 20251031 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2200.9 | USD | 20251031 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2201.4 | USD | 20251030 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2257.85 | USD | 20251030 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1862.72 | USD | 20251030 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2201.4 | USD | 20251030 |