| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.14 | USD | 20250902 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.25 | USD | 20250901 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.25 | USD | 20250901 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.51 | USD | 20250831 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.51 | USD | 20250831 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1041.81 | USD | 20250831 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.51 | USD | 20250830 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.51 | USD | 20250830 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1041.81 | USD | 20250830 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.51 | USD | 20250829 |