| Vendor | Spec | Unit | Price | Currency | Date |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 350.53 | USD | 20250822 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 283.36 | USD | 20250821 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 283.36 | USD | 20250821 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 350.7 | USD | 20250821 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 357.71 | USD | 20250821 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 357.71 | USD | 20250821 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 378.75 | USD | 20250821 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 350.7 | USD | 20250821 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 357.71 | USD | 20250821 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 350.7 | USD | 20250821 |