| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1057.35 | USD | 20250811 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 966.32 | USD | 20250811 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 784.26 | USD | 20250811 |
| China Petroleum and Chemical Corporation Jingmen Branch | China national standards | MT | 1092.36 | USD | 20250811 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1092.36 | USD | 20250811 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 854.56 | USD | 20250810 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 854.56 | USD | 20250809 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 966.63 | USD | 20250809 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1057.69 | USD | 20250809 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1085.71 | USD | 20250809 |