| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Lanen Chemical Co., Ltd. | China national standards | MT | 177.59 | USD | 20251018 |
| Henan Lanen Chemical Co., Ltd. | China national standards | MT | 177.59 | USD | 20251017 |
| Henan Lanen Chemical Co., Ltd. | China national standards | MT | 177.54 | USD | 20251016 |
| Henan Lanen Chemical Co., Ltd. | China national standards | MT | 177.48 | USD | 20251015 |
| Henan Lanen Chemical Co., Ltd. | China national standards | MT | 177.41 | USD | 20251014 |
| Henan Lanen Chemical Co., Ltd. | China national standards | MT | 177.45 | USD | 20251013 |
| Henan Lanen Chemical Co., Ltd. | China national standards | MT | 177.34 | USD | 20251012 |
| Henan Lanen Chemical Co., Ltd. | China national standards | MT | 177.34 | USD | 20251011 |
| Henan Lanen Chemical Co., Ltd. | China national standards | MT | 177.34 | USD | 20251010 |
| Henan Lanen Chemical Co., Ltd. | China national standards | MT | 177.21 | USD | 20251009 |