| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 634.45 | USD | 20251024 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 507.63 | USD | 20251023 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 627.49 | USD | 20251023 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 634.54 | USD | 20251023 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 507.54 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 627.38 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 507.24 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 627.0 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 507.41 | USD | 20251017 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 627.21 | USD | 20251017 |