| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 564.44 | USD | 20251103 |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 987.77 | USD | 20251103 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 479.77 | USD | 20251103 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 564.33 | USD | 20251101 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 479.68 | USD | 20251101 |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 987.58 | USD | 20251101 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 479.68 | USD | 20251031 |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 987.58 | USD | 20251031 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 564.33 | USD | 20251031 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 479.79 | USD | 20251030 |