| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1098.13 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1252.99 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1281.15 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1105.17 | USD | 20250829 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1041.81 | USD | 20250829 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 1027.26 | USD | 20250828 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 1069.47 | USD | 20250828 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 1055.4 | USD | 20250828 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 1125.76 | USD | 20250828 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1252.41 | USD | 20250828 |