| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1037.55 | USD | 20250818 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1289.92 | USD | 20250818 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1324.98 | USD | 20250818 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1191.78 | USD | 20250818 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 1303.95 | USD | 20250818 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 1303.95 | USD | 20250818 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 1149.72 | USD | 20250818 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 1004.61 | USD | 20250817 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 966.78 | USD | 20250816 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 966.78 | USD | 20250816 |