| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1100.68 | USD | 20251113 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1255.91 | USD | 20251113 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1284.71 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1256.48 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1101.18 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1080.01 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1108.24 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1101.18 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1100.67 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1284.11 | USD | 20251111 |