| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 985.14 | USD | 20250915 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 985.65 | USD | 20250914 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 985.65 | USD | 20250913 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 985.8 | USD | 20250909 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 957.36 | USD | 20250908 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 956.88 | USD | 20250907 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 956.88 | USD | 20250906 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 956.88 | USD | 20250905 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 956.78 | USD | 20250901 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 957.34 | USD | 20250831 |