| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.17 | USD | 20250906 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.17 | USD | 20250905 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.17 | USD | 20250905 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 815.88 | USD | 20250902 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 815.88 | USD | 20250902 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.07 | USD | 20250901 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.07 | USD | 20250901 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.56 | USD | 20250831 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.56 | USD | 20250831 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.56 | USD | 20250830 |