| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Pulaihua Chemical Co., Ltd. | China national standards | MT | 1183.87 | USD | 20251022 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1042.93 | USD | 20251022 |
| Lihuayi Group Co., Ltd. | China national standards | MT | 1106.35 | USD | 20251022 |
| SINOPEC Qingdao Refining&Chemical Co., Ltd. | China national standards | MT | 1247.29 | USD | 20251022 |
| Zibo Lishuo Chemical Trading Co., Ltd. | China national standards | MT | 986.55 | USD | 20251022 |
| Lihuayi Group Co., Ltd. | China national standards | MT | 890.72 | USD | 20251022 |
| Sinopec Northeast Natural Gas Sales Co., Ltd. | China national standards | MT | 1106.35 | USD | 20251022 |
| China Petroleum and Chemical Co., Ltd., QILU Branch | China national standards | MT | 901.99 | USD | 20251022 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 883.67 | USD | 20251022 |
| Zibo Lishuo Chemical Trading Co., Ltd. | China national standards | MT | 986.55 | USD | 20251022 |