| Vendor | Spec | Unit | Price | Currency | Date |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2201.15 | USD | 20251119 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 2258.1 | USD | 20251118 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2201.65 | USD | 20251118 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2201.65 | USD | 20251118 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1862.93 | USD | 20251118 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1863.99 | USD | 20251117 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1863.99 | USD | 20251117 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 2259.38 | USD | 20251117 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2202.89 | USD | 20251117 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2202.89 | USD | 20251117 |