Among the humidity and climate control required for planting, Preair focuses on humidity control. According to Hawthorne Horticulture's 2017 Intelligent Humidity Report, pest management and humidity control are still some of the biggest challenges in marijuana cultivation today. These two events are closely intertwined and have a great impact on each other. The best way to solve these problems is through prevention. By maintaining proper humidity, growers can create an environment where pests and diseases cannot thrive. With the growing concern about pesticide use and stricter product testing, humidity control is still the most effective and healthy way to manage such problems. The performance and professionalism of the dehumidifier greatly determine the quality of planting. Preair’s grow room dehumidifiers can help build a proper environment for plants and save customers’ cost. Under House Dehumidifier, Permanent Crawl Space Dehumidifier , Metal Commercial Dehumidifier , High Capacity Dehumidifier ,Industrial Dehumidifier For Greenhouse . An industrial dehumidifier is applicable to a large area. A single dehumidification area of the dehumidifier is from 200 to 1200 square meters. Patented technology, strong dehumidification, high efficiency and energy saving are significant advantages of Preair industrial dehumidifiers. The product will supply to all over the world, such as Europe, America, Australia,Belarus, Croatia,Nepal, Pakistan.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.