| Vendor | Spec | Unit | Price | Currency | Date |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 701.39 | USD | 20250821 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 701.39 | USD | 20250821 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 785.56 | USD | 20250821 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 785.56 | USD | 20250821 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 771.53 | USD | 20250821 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 757.5 | USD | 20250821 |
| Anhui Ruibai New Material Co., Ltd. | China national standards | MT | 812.51 | USD | 20250820 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 686.43 | USD | 20250820 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 784.49 | USD | 20250820 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 770.48 | USD | 20250820 |