| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 922.39 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 922.85 | USD | 20251201 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 904.48 | USD | 20251201 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 929.52 | USD | 20251129 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 904.1 | USD | 20251129 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 922.46 | USD | 20251129 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 904.1 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 922.46 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 929.52 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 922.59 | USD | 20251127 |