| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1100.88 | USD | 20250618 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1101.11 | USD | 20250617 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1100.45 | USD | 20250616 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1098.96 | USD | 20250615 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1098.96 | USD | 20250614 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1098.96 | USD | 20250613 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1098.96 | USD | 20250612 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1098.96 | USD | 20250611 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1098.96 | USD | 20250610 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1098.96 | USD | 20250609 |