| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 931.67 | USD | 20251003 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 931.67 | USD | 20251001 |
| Changzhou Dohow Chemical Co., Ltd. | China national standards | MT | 957.01 | USD | 20250930 |
| Qingdao Chengxin Hongfeng Chemical Co., Ltd. | China national standards | MT | 957.01 | USD | 20250930 |
| China Petroleum and Chemical Co., Ltd., QILU Branch | China national standards | MT | 942.93 | USD | 20250930 |
| SINOPEC Qingdao Refining&Chemical Co., Ltd. | China national standards | MT | 940.12 | USD | 20250930 |
| Wanhua Chemical Group Co., Ltd. | China national standards | MT | 985.15 | USD | 20250930 |
| Lihuayi Group Co., Ltd. | China national standards | MT | 945.75 | USD | 20250930 |
| Lihuayi Group Co., Ltd. | China national standards | MT | 1111.81 | USD | 20250930 |
| Lihuayi Group Co., Ltd. | China national standards | MT | 940.12 | USD | 20250930 |