| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1864.96 | USD | 20251127 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1864.51 | USD | 20251126 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2203.51 | USD | 20251126 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 2260.01 | USD | 20251126 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2203.51 | USD | 20251126 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1863.72 | USD | 20251125 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1863.17 | USD | 20251124 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2201.93 | USD | 20251124 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1862.43 | USD | 20251123 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2201.06 | USD | 20251122 |