| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Chengxin Hongfeng Chemical Co., Ltd. | China national standards | MT | 773.72 | USD | 20250918 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 759.65 | USD | 20250918 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 759.65 | USD | 20250918 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 759.65 | USD | 20250918 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 759.65 | USD | 20250918 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 844.06 | USD | 20250918 |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 914.4 | USD | 20250918 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 815.92 | USD | 20250918 |
| Jinan Pulaihua Chemical Co., Ltd. | China national standards | MT | 759.65 | USD | 20250918 |
| Jinan Pulaihua Chemical Co., Ltd. | China national standards | MT | 1195.75 | USD | 20250918 |