First of all, use the "three good" to weigh whether the photocatalyst filter value is not worth choosing. There are many good photocatalyst filters in the industry. Many people evaluate whether photocatalyst filters are worth choosing from the aspect of quality. We must pay attention not only to the quality of the filter. Manufacturers may not care about any follow-up services, and there will be many such situations.

　　But for dealers, if the manufacturer doesn't care about everything and relies on you to run and do the industry, it will not last long, and it is also unreliable. It is difficult for the manufacturer to make a difference in the industry without follow-up services. It can only be used as an opportunistic photocatalyst filter, and must not be operated as a main photocatalyst filter.

　　1. The manufacturer must be good: it must be a photocatalyst filter manufacturer that you can trust, a manufacturer with credibility and reputation, so that you will not be distracted by the after-sales service of the manufacturer.

　　2. To have a good brand: a brand with certain brand influence and foundation, not a new brand or a brand without foundation.

　　3. The photocatalyst filter should be a good product: a good photocatalyst filter determines the industry and the future. To measure whether a photocatalyst filter is good or not, you must first look at the packaging, concept and quality, and then look at the price and profit. If the quality is excellent and the profit is good, then you can choose.