| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 987.24 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1305.17 | USD | 20251119 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 987.7 | USD | 20251119 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 987.92 | USD | 20251118 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1305.46 | USD | 20251118 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 988.48 | USD | 20251117 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1306.2 | USD | 20251117 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1306.04 | USD | 20251115 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 988.35 | USD | 20251115 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 988.35 | USD | 20251114 |