| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 868.78 | USD | 20251129 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 854.65 | USD | 20251129 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 868.78 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 854.65 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 868.9 | USD | 20251127 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 854.77 | USD | 20251127 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 868.69 | USD | 20251126 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 854.57 | USD | 20251126 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 854.21 | USD | 20251125 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 868.33 | USD | 20251125 |