| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 542.02 | USD | 20250829 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 542.02 | USD | 20250829 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 542.02 | USD | 20250829 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 541.77 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 541.77 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 541.77 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 541.43 | USD | 20250827 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 541.43 | USD | 20250827 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 540.82 | USD | 20250826 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 540.82 | USD | 20250826 |