| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1120.17 | USD | 20250812 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1099.16 | USD | 20250812 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1106.16 | USD | 20250812 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1106.16 | USD | 20250812 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1092.16 | USD | 20250812 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 910.13 | USD | 20250812 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1050.16 | USD | 20250812 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 980.15 | USD | 20250812 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 910.13 | USD | 20250812 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 938.14 | USD | 20250812 |