| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.16 | USD | 20251129 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.16 | USD | 20251129 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.23 | USD | 20251129 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.16 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 381.42 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.23 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 346.1 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.23 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.23 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 331.97 | USD | 20251128 |