| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 844.32 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 843.79 | USD | 20250827 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 842.84 | USD | 20250826 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 843.16 | USD | 20250825 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 843.16 | USD | 20250825 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 841.27 | USD | 20250823 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 841.27 | USD | 20250822 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 841.27 | USD | 20250822 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 827.64 | USD | 20250821 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 841.67 | USD | 20250821 |