| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.73 | USD | 20251104 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.91 | USD | 20251104 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.73 | USD | 20251104 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.73 | USD | 20251104 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.03 | USD | 20251103 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.03 | USD | 20251103 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1185.32 | USD | 20251103 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.03 | USD | 20251103 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1171.21 | USD | 20251103 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.81 | USD | 20251101 |