| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1078.91 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1283.41 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1255.2 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1107.12 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1100.06 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1100.06 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1100.58 | USD | 20251119 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1100.58 | USD | 20251119 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1107.63 | USD | 20251119 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1284.0 | USD | 20251119 |