| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1857.9 | USD | 20251010 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2195.7 | USD | 20251010 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2194.03 | USD | 20251009 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2250.29 | USD | 20251009 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1856.49 | USD | 20251009 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2194.03 | USD | 20251009 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1857.72 | USD | 20251008 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1857.72 | USD | 20251007 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2251.78 | USD | 20250930 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2195.48 | USD | 20250930 |