| Vendor | Spec | Unit | Price | Currency | Date |
| Zhongyin New Materials (Jinan) Co., Ltd. | China national standards | MT | 407.96 | USD | 20250918 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 436.1 | USD | 20250918 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 436.1 | USD | 20250918 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 436.1 | USD | 20250918 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 436.1 | USD | 20250918 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 457.2 | USD | 20250918 |
| Liaocheng Yuanze Chemical Co., Ltd. | China national standards | MT | 457.66 | USD | 20250917 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 351.98 | USD | 20250916 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 450.53 | USD | 20250916 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 436.45 | USD | 20250916 |