| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 1748.3 | USD | 20250715 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 1747.25 | USD | 20250709 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 1747.42 | USD | 20250708 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 1747.4 | USD | 20250704 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 1747.69 | USD | 20250703 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 1747.13 | USD | 20250702 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 1747.42 | USD | 20250701 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 1746.15 | USD | 20250630 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 1745.15 | USD | 20250627 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 1743.13 | USD | 20250623 |