| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 989.41 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 989.64 | USD | 20251204 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1307.35 | USD | 20251203 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 989.34 | USD | 20251203 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 988.78 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 989.27 | USD | 20251201 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 988.85 | USD | 20251129 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 988.85 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1306.7 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 988.99 | USD | 20251127 |