| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.51 | USD | 20250829 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.51 | USD | 20250829 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.3 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.3 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1041.33 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.3 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.3 | USD | 20250828 |
| 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 |