| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 939.4 | USD | 20250818 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 883.32 | USD | 20250818 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1051.57 | USD | 20250818 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 911.36 | USD | 20250818 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 981.46 | USD | 20250818 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 925.38 | USD | 20250818 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 925.38 | USD | 20250818 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1121.67 | USD | 20250818 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1100.64 | USD | 20250818 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1107.65 | USD | 20250818 |