| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 344.94 | USD | 20250916 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 373.1 | USD | 20250916 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 351.98 | USD | 20250916 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 260.36 | USD | 20250915 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 260.36 | USD | 20250915 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 294.13 | USD | 20250915 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 323.69 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 344.8 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 330.73 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.91 | USD | 20250915 |