| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 274.37 | USD | 20250901 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 274.37 | USD | 20250901 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 351.76 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.79 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.79 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.79 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.76 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 379.9 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.76 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 330.65 | USD | 20250901 |