| Vendor | Spec | Unit | Price | Currency | Date |
| SINOPEC Qingdao Refining&Chemical Co., Ltd. | China national standards | MT | 1247.04 | USD | 20251016 |
| Jinan Pulaihua Chemical Co., Ltd. | China national standards | MT | 1106.13 | USD | 20251016 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 936.69 | USD | 20251015 |
| Lihuayi Group Co., Ltd. | China national standards | MT | 915.56 | USD | 20251015 |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 1197.27 | USD | 20251015 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 936.69 | USD | 20251015 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 915.56 | USD | 20251015 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 1295.87 | USD | 20251015 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 1295.87 | USD | 20251015 |
| Qingdao Chengxin Hongfeng Chemical Co., Ltd. | China national standards | MT | 957.81 | USD | 20251015 |