| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 380.95 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 345.68 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.79 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 331.57 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.79 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.73 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.79 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.58 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 345.53 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.69 | USD | 20251120 |