| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1120.37 | USD | 20250811 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 882.29 | USD | 20250811 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 924.31 | USD | 20250811 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 924.31 | USD | 20250811 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1050.35 | USD | 20250811 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 910.3 | USD | 20250811 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 980.32 | USD | 20250811 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 924.6 | USD | 20250810 |
| China national standards | MT | 1180.0 | USD | 20210323 | |
| China national standards | MT | 150.0 | USD | 20210323 |