This product is used for new houses. The treatment of harmful gases such as formaldehyde, benzene and VOC in new cars and other environments can remove smoke smell, odour and mildew smell after use. Nano film can be formed on the surface of the object to remove all kinds of free harmful gases. Application Widely used in household, offices, toilets, bathrooms, karaoke room, guesthouse, hotel, restaurant, entertainment, transport and other places, fresh air, long-lasting fragrance, the sterilization in addition to aldehydes.