| Vendor | Spec | Unit | Price | Currency | Date |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2203.58 | USD | 20251202 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2204.67 | USD | 20251201 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2261.2 | USD | 20251201 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1865.49 | USD | 20251201 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2203.73 | USD | 20251128 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 2260.24 | USD | 20251128 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1864.7 | USD | 20251128 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2203.73 | USD | 20251128 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2204.04 | USD | 20251127 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 2260.56 | USD | 20251127 |