| Vendor | Spec | Unit | Price | Currency | Date |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 353.14 | USD | 20251202 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 324.89 | USD | 20251202 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 423.97 | USD | 20251201 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 388.64 | USD | 20251201 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.44 | USD | 20251201 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.31 | USD | 20251201 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.71 | USD | 20251201 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.31 | USD | 20251201 |
| Suzhou Shangma Chemical Technology Co., Ltd. | China national standards | MT | 395.71 | USD | 20251201 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 367.44 | USD | 20251201 |