| Vendor | Spec | Unit | Price | Currency | Date |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 351.48 | USD | 20250919 |
| Qingdao Ruishuang Chemical Co., Ltd. | China national standards | MT | 421.77 | USD | 20250919 |
| Zhongyin New Materials (Jinan) Co., Ltd. | China national standards | MT | 255.88 | USD | 20250919 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 379.83 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.69 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.73 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.73 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.73 | USD | 20250918 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 256.03 | USD | 20250918 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 323.56 | USD | 20250918 |