| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Kekule Chemical Co., Ltd. | 85% | MT | 1044.14 | USD | 20251119 |
| Jinan Kekule Chemical Co., Ltd. | 85% | MT | 1044.14 | USD | 20251119 |
| Jinan Kekule Chemical Co., Ltd. | 85% | MT | 1044.83 | USD | 20251114 |
| Jinan Kekule Chemical Co., Ltd. | 85% | MT | 1040.67 | USD | 20250827 |