| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1863.75 | USD | 20251116 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1863.75 | USD | 20251115 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2202.61 | USD | 20251114 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 2259.09 | USD | 20251114 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1863.75 | USD | 20251114 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2202.61 | USD | 20251114 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1862.7 | USD | 20251113 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2258.83 | USD | 20251112 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2202.36 | USD | 20251112 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1863.54 | USD | 20251112 |