| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 283.86 | USD | 20250825 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 283.86 | USD | 20250825 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 283.23 | USD | 20250823 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 283.23 | USD | 20250823 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 283.23 | USD | 20250822 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 283.23 | USD | 20250822 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 283.36 | USD | 20250821 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 283.36 | USD | 20250821 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 282.98 | USD | 20250820 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 282.98 | USD | 20250820 |