| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 366.86 | USD | 20251119 |
| China national standards | MT | 389.43 | USD | 20251119 | |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 388.02 | USD | 20251119 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 352.75 | USD | 20251119 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.86 | USD | 20251119 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.75 | USD | 20251119 |
| China national standards | MT | 389.43 | USD | 20251119 | |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 344.28 | USD | 20251119 |
| China national standards | MT | 423.3 | USD | 20251119 | |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 423.3 | USD | 20251119 |