| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 350.53 | USD | 20250823 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 364.55 | USD | 20250823 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 329.5 | USD | 20250823 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 343.52 | USD | 20250823 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 283.23 | USD | 20250823 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 283.23 | USD | 20250823 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 350.53 | USD | 20250823 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 350.53 | USD | 20250822 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 283.23 | USD | 20250822 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 283.23 | USD | 20250822 |