| Vendor | Spec | Unit | Price | Currency | Date |
| Hangjin Technology Co., Ltd. | China national standards | MT | 1017.11 | USD | 20251128 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1115.99 | USD | 20251128 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1214.88 | USD | 20251128 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1115.99 | USD | 20251128 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 988.85 | USD | 20251128 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1059.49 | USD | 20251128 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 988.85 | USD | 20251128 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 1172.5 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1200.75 | USD | 20251128 |
| Befar Group Co., Ltd. | China national standards | MT | 1115.99 | USD | 20251128 |