| Vendor | Spec | Unit | Price | Currency | Date |
| SINOPEC Maoming Petrochemical Co., Ltd. | China national standards | MT | 551.21 | USD | 20251210 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 607.75 | USD | 20251210 |
| Sinopec Northeast Natural Gas Sales Co., Ltd. | China national standards | MT | 636.02 | USD | 20251210 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 592.91 | USD | 20251210 |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 494.68 | USD | 20251210 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 491.85 | USD | 20251210 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 491.85 | USD | 20251210 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 592.91 | USD | 20251210 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 607.75 | USD | 20251210 |
| BASF-YPC. Co., Ltd. | China national standards | MT | 593.61 | USD | 20251210 |