| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 971.08 | USD | 20250930 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1189.22 | USD | 20250930 |
| Lihuayi Group Co., Ltd. | China national standards | MT | 940.12 | USD | 20250930 |
| China Petroleum and Chemical Co., Ltd., QILU Branch | China national standards | MT | 942.93 | USD | 20250930 |
| Wanhua Chemical Group Co., Ltd. | China national standards | MT | 985.15 | USD | 20250930 |
| Lihuayi Group Co., Ltd. | China national standards | MT | 1111.81 | USD | 20250930 |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 1196.26 | USD | 20250930 |
| SINOPEC Qingdao Refining&Chemical Co., Ltd. | China national standards | MT | 1245.51 | USD | 20250930 |
| Lihuayi Group Co., Ltd. | China national standards | MT | 945.75 | USD | 20250930 |
| Zibo Lishuo Chemical Trading Co., Ltd. | China national standards | MT | 985.15 | USD | 20250930 |