| Vendor | Spec | Unit | Price | Currency | Date |
| Lihuayi Group Co., Ltd. | China national standards | MT | 1059.49 | USD | 20251129 |
| Luxi Chemical Group Co., Ltd. | China national standards | MT | 875.84 | USD | 20251129 |
| China Petroleum and Chemical Co., Ltd., QILU Branch | China national standards | MT | 1010.04 | USD | 20251129 |
| Luxi Chemical Group Co., Ltd. | China national standards | MT | 861.72 | USD | 20251129 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1017.11 | USD | 20251129 |
| Luxi Chemical Group Co., Ltd. | China national standards | MT | 875.84 | USD | 20251129 |
| Lihuayi Group Co., Ltd. | China national standards | MT | 1031.23 | USD | 20251128 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1017.11 | USD | 20251128 |
| China Petroleum and Chemical Co., Ltd., QILU Branch | China national standards | MT | 1010.04 | USD | 20251128 |
| Luxi Chemical Group Co., Ltd. | China national standards | MT | 932.35 | USD | 20251128 |