| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 956.37 | USD | 20251009 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 985.15 | USD | 20251008 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 985.15 | USD | 20251004 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 985.15 | USD | 20250930 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 984.68 | USD | 20250929 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 983.81 | USD | 20250928 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 983.81 | USD | 20250928 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 983.81 | USD | 20250927 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 983.81 | USD | 20250927 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 983.81 | USD | 20250926 |