| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.59 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1178.83 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1200.01 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1214.12 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1213.56 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.05 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1213.56 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1178.28 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1199.45 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1213.73 | USD | 20251110 |