| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1253.43 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1253.43 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1177.04 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1177.04 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1252.24 | USD | 20251210 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1175.92 | USD | 20251210 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1251.89 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1175.59 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1252.05 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1175.74 | USD | 20251208 |