| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chem | China national standards | MT | 541.61 | USD | 20250918 |
| Zaozhuang Yitai | China national standards | MT | 633.04 | USD | 20250918 |
| Hualu Holdings | China national standards | MT | 675.25 | USD | 20250918 |
| Shandong Huize Chem | Polyester Resin Grade | MT | 604.91 | USD | 20250918 |
| CNPC | China national standards | MT | 562.71 | USD | 20250918 |
| Jinan Pulaihua Chem | China national standards | MT | 562.71 | USD | 20250918 |
| Jinan Pulaihua Chem | China national standards | MT | 590.84 | USD | 20250918 |
| Linyi Haoxuan | Polyester Grade | MT | 633.04 | USD | 20250918 |
| Linyi Haoxuan | Polyester Grade | MT | 633.04 | USD | 20250918 |
| Shandong Linglin | Polyester Grade | MT | 604.91 | USD | 20250918 |