| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1105.28 | USD | 20250711 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1104.37 | USD | 20250708 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1104.8 | USD | 20250707 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1104.35 | USD | 20250706 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1104.35 | USD | 20250705 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1104.35 | USD | 20250704 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1104.54 | USD | 20250703 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1104.18 | USD | 20250702 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1104.37 | USD | 20250701 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1103.57 | USD | 20250630 |