| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 921.89 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 928.95 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 903.53 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 903.11 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 928.51 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 921.46 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 921.59 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 903.24 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 928.64 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 903.5 | USD | 20251107 |