| Vendor | Spec | Unit | Price | Currency | Date |
| Dongying Huatai Fine Chemical Co., Ltd. | China national standards | MT | 1088.2 | USD | 20251201 |
| Shandong Yuxuan Chemical Products Co., Ltd. | China national standards | MT | 1243.66 | USD | 20251201 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1257.79 | USD | 20251201 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1059.94 | USD | 20251201 |
| Dongying Huatai Fine Chemical Co., Ltd. | China national standards | MT | 1115.99 | USD | 20251130 |
| Shandong Jinling Chemical Ao.,ltd | China national standards | MT | 1115.99 | USD | 20251130 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1115.99 | USD | 20251130 |
| Dongying Huatai Fine Chemical Co., Ltd. | China national standards | MT | 1115.99 | USD | 20251130 |
| Shandong Jinling Chemical Ao.,ltd | China national standards | MT | 1115.99 | USD | 20251130 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1115.99 | USD | 20251130 |