| Vendor | Spec | Unit | Price | Currency | Date |
| Lihuayi Group Co., Ltd. | China national standards | MT | 1057.1 | USD | 20251017 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1043.0 | USD | 20251017 |
| Lihuayi Group Co., Ltd. | China national standards | MT | 1014.81 | USD | 20251017 |
| China Petroleum and Chemical Co., Ltd., QILU Branch | China national standards | MT | 915.91 | USD | 20251016 |
| Luxi Chemical Group Co., Ltd. | China national standards | MT | 915.91 | USD | 20251016 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1014.54 | USD | 20251016 |
| Luxi Chemical Group Co., Ltd. | China national standards | MT | 1077.95 | USD | 20251016 |
| Luxi Chemical Group Co., Ltd. | China national standards | MT | 915.91 | USD | 20251016 |
| Lihuayi Group Co., Ltd. | China national standards | MT | 1014.54 | USD | 20251016 |
| Lihuayi Group Co., Ltd. | China national standards | MT | 915.91 | USD | 20251016 |