| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 967.46 | USD | 20250823 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 841.27 | USD | 20250823 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1093.65 | USD | 20250823 |
| China Petroleum and Chemical Corporation Jingmen Branch | China national standards | MT | 1093.65 | USD | 20250823 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 841.27 | USD | 20250822 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 841.27 | USD | 20250822 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 967.46 | USD | 20250822 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1058.59 | USD | 20250822 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1086.64 | USD | 20250822 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1093.65 | USD | 20250822 |