| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1107.51 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1283.86 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1255.64 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1079.29 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1100.45 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1100.45 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1100.45 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1100.45 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1079.29 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1255.64 | USD | 20251031 |