| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1198.36 | USD | 20251021 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 958.69 | USD | 20251021 |
| Befar Group Co., Ltd. | China national standards | MT | 1127.87 | USD | 20251021 |
| Shandong Jinling Chemical Ao.,ltd | China national standards | MT | 1057.38 | USD | 20251021 |
| Dongying Huatai Fine Chemical Co., Ltd. | China national standards | MT | 1057.38 | USD | 20251021 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1205.41 | USD | 20251021 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1120.82 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1211.73 | USD | 20251020 |
| Befar Group Co., Ltd. | China national standards | MT | 1127.19 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1211.73 | USD | 20251020 |