| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1080.68 | USD | 20251129 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1101.87 | USD | 20251129 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1108.93 | USD | 20251129 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1257.26 | USD | 20251129 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1080.68 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1108.93 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1101.87 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1257.26 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1285.51 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1101.87 | USD | 20251128 |