| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Lanen Chemical Co., Ltd. | China national standards | MT | 177.77 | USD | 20251031 |
| Henan Lanen Chemical Co., Ltd. | China national standards | MT | 177.81 | USD | 20251030 |
| Henan Lanen Chemical Co., Ltd. | China national standards | MT | 177.86 | USD | 20251029 |
| Henan Lanen Chemical Co., Ltd. | China national standards | MT | 177.76 | USD | 20251027 |
| Henan Lanen Chemical Co., Ltd. | China national standards | MT | 177.64 | USD | 20251025 |
| Henan Lanen Chemical Co., Ltd. | China national standards | MT | 177.64 | USD | 20251024 |
| Henan Lanen Chemical Co., Ltd. | China national standards | MT | 177.67 | USD | 20251023 |
| Henan Lanen Chemical Co., Ltd. | China national standards | MT | 177.58 | USD | 20251022 |
| Henan Lanen Chemical Co., Ltd. | China national standards | MT | 177.64 | USD | 20251021 |
| Henan Lanen Chemical Co., Ltd. | China national standards | MT | 177.53 | USD | 20251020 |