| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 814.74 | USD | 20250826 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 815.05 | USD | 20250825 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 815.05 | USD | 20250825 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 792.19 | USD | 20250823 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 792.19 | USD | 20250823 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 792.19 | USD | 20250822 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 792.19 | USD | 20250822 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 792.57 | USD | 20250821 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 792.57 | USD | 20250821 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 791.49 | USD | 20250820 |