| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 757.5 | USD | 20250821 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 757.5 | USD | 20250821 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 756.47 | USD | 20250820 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 756.74 | USD | 20250819 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 771.15 | USD | 20250818 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 770.62 | USD | 20250817 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 770.62 | USD | 20250816 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 770.62 | USD | 20250815 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 770.99 | USD | 20250814 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 770.85 | USD | 20250813 |