| Vendor | Spec | Unit | Price | Currency | Date |
| Shenghong Refining & Chemical(Lianyungang) Co., Ltd. | China national standards | MT | 1307.63 | USD | 20250610 |
| China national standards | MT | 1390.0 | USD | 20210323 | |
| China national standards | MT | 820.0 | USD | 20210323 | |
| China national standards | MT | 130.0 | USD | 20210322 | |
| China national standards | MT | 790.0 | USD | 20210322 | |
| China national standards | MT | 1390.0 | USD | 20210322 | |
| China national standards | MT | 800.0 | USD | 20210322 | |
| China national standards | MT | 130.0 | USD | 20210321 | |
| China national standards | MT | 130.0 | USD | 20210321 | |
| China national standards | MT | 130.0 | USD | 20210320 |