| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1639.48 | USD | 20251203 |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1646.55 | USD | 20251203 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1512.28 | USD | 20251203 |
| Dongying Hebang Chemical Co., Ltd. | China national standards | MT | 1356.81 | USD | 20251203 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1151.88 | USD | 20251203 |
| Shandong Haili Chemical Industry Co., Ltd. | China national standards | MT | 1696.02 | USD | 20251203 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 1625.35 | USD | 20251203 |
| Dongying Liancheng Chemical Co., Ltd. | China national standards | MT | 1200.67 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1172.42 | USD | 20251202 |
| Jiangsu Haixing Chemical Co., Ltd. | China national standards | MT | 1271.29 | USD | 20251202 |