First of all, let’s talk about paper movements. Generally, paper movements have a short lifespan of 2-3 months, and the price of replacement ranges from a few hundred yuan to a thousand yuan. Moreover, the paper movement cannot be used repeatedly, and the subsequent cost will be very high. When the paper movement becomes damp, it is easy to produce mold, which not only fails to purify the air, but also aggravates the spread of harmful gases. It is equivalent to placing a source of pollution in your home. The surface of Sender's Kangshu membrane is coated with an antibacterial coating that will not breed bacteria. The total heat recovery efficiency is as high as 78%, which is very energy-saving. The most important thing is that it can be directly washed with water and reused, saving user costs. Therefore, Kangshu film is definitely better than paper movement.