The R&D team of Preair is the core strategic department of the company. Our R&D team has 50+ engineers to build quality assurance. Up to now, Preair has won 9 invention patents, 31 utility models, and 6 appearance patents. Commercial Dehumidifier Canada, Whole House Crawl Space Dehumidifier , Basement Dehumidifier With Hose , High Performance Dehumidifier ,Fixed Dehumidifier . Preair has mature technique to manufacture industrial dehumidifiers. Preair industrial dehumidifiers adopt the principle of freezing dehumidification and are equipped with the international brand compressor, which is of high energy efficiency, good heat transfer, has reasonable configuration and strong dehumidification function. Industrial dehumidifiers produced by Preair are widely used in warehouses, factories and other large industrial places, can effectively avoid the significant loss of goods due to moisture and mold. The product will supply to all over the world, such as Europe, America, Australia,Auckland, luzern,Chile, Bolivia.Humidity, i.e., the amount of water vapor in the air, is generally expressed in terms of relative humidity (RH). Humidity, temperature, air flow rate and fresh air volume are important physical parameters of indoor air quality standards.