| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1213.32 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.81 | USD | 20251101 |
| Shandong Jinling Chemical Ao.,ltd | China national standards | MT | 1058.13 | USD | 20251101 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1058.13 | USD | 20251101 |
| Shandong Jinling Chemical Ao.,ltd | China national standards | MT | 1269.75 | USD | 20251101 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 1128.67 | USD | 20251101 |
| Shandong Jinling Chemical Ao.,ltd | China national standards | MT | 1241.53 | USD | 20251101 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1121.61 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1199.21 | USD | 20251031 |
| Hangjin Technology Co., Ltd. | China national standards | MT | 1015.8 | USD | 20251031 |