| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1210.77 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1171.35 | USD | 20250908 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 957.36 | USD | 20250908 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 985.51 | USD | 20250908 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1210.77 | USD | 20250908 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1196.69 | USD | 20250908 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 1055.39 | USD | 20250907 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.17 | USD | 20250907 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1210.18 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1210.18 | USD | 20250906 |