| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.02 | USD | 20250827 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.02 | USD | 20250827 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 449.51 | USD | 20250826 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 449.51 | USD | 20250826 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 449.51 | USD | 20250826 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 449.51 | USD | 20250826 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 449.51 | USD | 20250826 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 449.51 | USD | 20250826 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 449.68 | USD | 20250825 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 449.68 | USD | 20250825 |