| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.34 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.25 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.47 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.52 | USD | 20251020 |
| China national standards | MT | 369.15 | USD | 20251020 | |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 369.15 | USD | 20251020 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 366.34 | USD | 20251020 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 373.38 | USD | 20251020 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 422.7 | USD | 20251020 |
| China national standards | MT | 422.7 | USD | 20251020 |