| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 921.7 | USD | 20251124 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 928.4 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 903.0 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 921.34 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 902.62 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 928.0 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 920.95 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 903.24 | USD | 20251118 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 928.64 | USD | 20251118 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 921.59 | USD | 20251118 |