| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2205.48 | USD | 20251204 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2262.03 | USD | 20251204 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2205.48 | USD | 20251204 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1866.17 | USD | 20251204 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2204.82 | USD | 20251203 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2261.36 | USD | 20251203 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1865.62 | USD | 20251203 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2203.58 | USD | 20251202 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2260.08 | USD | 20251202 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1864.56 | USD | 20251202 |