| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 939.41 | USD | 20250822 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 841.27 | USD | 20250822 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 932.4 | USD | 20250822 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 897.35 | USD | 20250822 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 841.67 | USD | 20250821 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 939.86 | USD | 20250821 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 932.85 | USD | 20250821 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 897.78 | USD | 20250821 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 896.56 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 938.59 | USD | 20250820 |