| Vendor | Spec | Unit | Price | Currency | Date |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 1307.06 | USD | 20250926 |
| Lihuayi Weiyuan Chemical Co., Ltd. | China national standards | MT | 1321.12 | USD | 20250926 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 1054.08 | USD | 20250926 |
| Lihuayi Group Co., Ltd. | China national standards | MT | 941.65 | USD | 20250926 |
| China Petroleum and Chemical Co., Ltd., QILU Branch | China national standards | MT | 941.65 | USD | 20250926 |
| SINOPEC Qingdao Refining&Chemical Co., Ltd. | China national standards | MT | 941.65 | USD | 20250926 |
| Wanhua Chemical Group Co., Ltd. | China national standards | MT | 983.81 | USD | 20250926 |
| Shandong Yuhuang Chemical Co., Ltd. | China national standards | MT | 1285.98 | USD | 20250926 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1194.63 | USD | 20250926 |
| Lihuayi Group Co., Ltd. | China national standards | MT | 955.7 | USD | 20250926 |