| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 819.66 | USD | 20250816 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 784.63 | USD | 20250816 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 784.63 | USD | 20250816 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 812.65 | USD | 20250816 |
| Zibo Lishuo Chemical Trading Co., Ltd. | China national standards | MT | 910.73 | USD | 20250816 |
| Zibo Lishuo Chemical Trading Co., Ltd. | China national standards | MT | 910.73 | USD | 20250816 |
| Zibo Lishuo Chemical Trading Co., Ltd. | China national standards | MT | 910.73 | USD | 20250816 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 819.66 | USD | 20250816 |
| Zibo Lishuo Chemical Trading Co., Ltd. | China national standards | MT | 910.73 | USD | 20250816 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 784.63 | USD | 20250816 |