| Vendor | Spec | Unit | Price | Currency | Date |
| Dongying Huatai Fine Chemical Co., Ltd. | China national standards | MT | 1088.28 | USD | 20251203 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1060.01 | USD | 20251203 |
| Dongying Huatai Fine Chemical Co., Ltd. | China national standards | MT | 1088.28 | USD | 20251203 |
| Shandong Jinling Chemical Ao.,ltd | China national standards | MT | 1123.61 | USD | 20251203 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1215.48 | USD | 20251203 |
| Shinghwa Advanced Material Group Co., Ltd. | China national standards | MT | 1215.48 | USD | 20251203 |
| Shandong Jinling Chemical Ao.,ltd | China national standards | MT | 1144.81 | USD | 20251203 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 1130.68 | USD | 20251203 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1190.04 | USD | 20251203 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1180.15 | USD | 20251203 |