| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1308.6 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1308.6 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 990.3 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 990.3 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1307.37 | USD | 20251210 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 989.36 | USD | 20251210 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 989.08 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1307.0 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 989.2 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1307.16 | USD | 20251208 |