| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 2257.3 | USD | 20251027 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1862.28 | USD | 20251027 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2200.87 | USD | 20251027 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2199.41 | USD | 20251025 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2199.41 | USD | 20251024 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2255.81 | USD | 20251024 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2199.41 | USD | 20251024 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1861.04 | USD | 20251024 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2199.72 | USD | 20251023 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 2256.13 | USD | 20251023 |