| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.64 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.69 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.64 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 345.53 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.58 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 380.79 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.88 | USD | 20251118 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.88 | USD | 20251118 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 331.66 | USD | 20251118 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 381.05 | USD | 20251118 |