| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1293.92 | USD | 20251009 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1329.08 | USD | 20251009 |
| Shandong Yuhuang Chemical Co., Ltd. | China national standards | MT | 1286.88 | USD | 20251009 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1195.47 | USD | 20251009 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1040.76 | USD | 20251009 |
| China Petroleum and Chemical Co., Ltd., QILU Branch | China national standards | MT | 1012.63 | USD | 20251009 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 970.44 | USD | 20251009 |
| SINOPEC Maoming Petrochemical Co., Ltd. | China national standards | MT | 1223.59 | USD | 20251009 |
| Shandong Yuhuang Chemical Co., Ltd. | China national standards | MT | 1364.24 | USD | 20251009 |
| China Petroleum and Chemical Co., Ltd., QILU Branch | China national standards | MT | 1223.59 | USD | 20251009 |