| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1177.96 | USD | 20251104 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1213.23 | USD | 20251104 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1213.23 | USD | 20251104 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.73 | USD | 20251104 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1213.54 | USD | 20251103 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1178.26 | USD | 20251103 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1199.43 | USD | 20251103 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.03 | USD | 20251103 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1213.54 | USD | 20251103 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1213.32 | USD | 20251101 |