| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1185.1 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.81 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.81 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.81 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.81 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.81 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.81 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.81 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1185.1 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1185.1 | USD | 20251031 |