| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.83 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.8 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 330.69 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.87 | USD | 20250906 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 351.8 | USD | 20250906 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 351.8 | USD | 20250905 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 351.67 | USD | 20250902 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 294.0 | USD | 20250902 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.71 | USD | 20250902 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.71 | USD | 20250902 |