| Vendor | Spec | Unit | Price | Currency | Date |
| Shanghai Yongkun | Purified Water | MT | 504.18 | USD | 20251205 |
| Shanghai Yongkun | 1000 VOCs | MT | 1214.95 | USD | 20251125 |
| Shanghai Yongkun | 1000 VOCs | MT | 1222.71 | USD | 20251125 |
| Shanghai Yongkun | 1000 VOCs | MT | 1215.66 | USD | 20251125 |
| Shanghai Yongkun | 1000 VOCs | MT | 1221.3 | USD | 20251125 |
| Shanghai Yongkun | 1000 VOCs | MT | 1206.83 | USD | 20251124 |
| Shanghai Yongkun | Purified Water | MT | 501.08 | USD | 20251124 |
| Shanghai Yongkun | Purified Water | MT | 503.7 | USD | 20251121 |
| Shanghai Yongkun | Purified Water | MT | 505.11 | USD | 20251121 |
| Shanghai Yongkun | Purified Water | MT | 502.29 | USD | 20251121 |