| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 847.59 | USD | 20251129 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 939.41 | USD | 20251129 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 946.47 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 847.59 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 939.41 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 911.16 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 904.1 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 911.29 | USD | 20251127 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 847.71 | USD | 20251127 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 946.61 | USD | 20251127 |