| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 931.47 | USD | 20251110 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 931.47 | USD | 20251110 |
| Derun Chemical Co., Ltd. | China national standards | MT | 931.47 | USD | 20251110 |
| Xingtai Risun Coal Chemicais Limited | China national standards | MT | 1284.29 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1256.07 | USD | 20251110 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1093.77 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1065.54 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 973.81 | USD | 20251110 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 804.45 | USD | 20251110 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1100.82 | USD | 20251110 |