| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1120.7 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1099.69 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1106.69 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1106.69 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1092.68 | USD | 20250820 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 945.92 | USD | 20250819 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 938.91 | USD | 20250819 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 882.86 | USD | 20250819 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 924.9 | USD | 20250819 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 924.9 | USD | 20250819 |