| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1191.04 | USD | 20250805 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1165.82 | USD | 20250805 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1205.06 | USD | 20250805 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1205.06 | USD | 20250805 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1191.04 | USD | 20250805 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1205.06 | USD | 20250805 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1008.47 | USD | 20250804 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 1064.5 | USD | 20250804 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1190.56 | USD | 20250804 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1204.57 | USD | 20250804 |