| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 861.24 | USD | 20250806 |
| Anhui Ruibai New Material Co., Ltd. | China national standards | MT | 812.22 | USD | 20250806 |
| Anhui Ruibai New Material Co., Ltd. | China national standards | MT | 686.19 | USD | 20250806 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 686.19 | USD | 20250806 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 742.2 | USD | 20250806 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 770.21 | USD | 20250806 |
| China national standards | MT | 1230.0 | USD | 20210323 | |
| China national standards | MT | 2920.0 | USD | 20210323 | |
| China national standards | MT | 1270.0 | USD | 20210323 | |
| China national standards | MT | 1210.0 | USD | 20210323 |