| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 760.36 | USD | 20250914 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 774.44 | USD | 20250914 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 774.44 | USD | 20250913 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 760.36 | USD | 20250913 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 760.36 | USD | 20250913 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 760.36 | USD | 20250913 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 788.52 | USD | 20250913 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 760.48 | USD | 20250909 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 760.48 | USD | 20250909 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 760.48 | USD | 20250909 |