What about nano mineral crystal activated carbon in addition to formaldehyde?

Nano-mineral crystal is the fourth generation of activated carbon, which is made by adding the internationally recognized patent formula of mineral crystal with strong adsorption. The effect will be much better than ordinary activated carbon. Building a new house in in addition to formaldehyde is a long process, so it is suggested to put some activated carbon as soon as possible. When using charcoal bags, be sure to open more windows for ventilation, so that the use effect will be better.