| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 260.46 | USD | 20250916 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 323.82 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.02 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.02 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.02 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.98 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 380.14 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.98 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.06 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 330.86 | USD | 20250916 |