A humidity control how much is appropriate? Spring and summer, when the air's relative humidity> 60%, metal items will rust, biological products will be moldy, paper products become soft, people will feel chest tightness. At this point need dehumidifier to <60%. Autumn and winter, when the air's relative humidity of 40%. Some special industries requiring low humidity. Such as: glass-attaching <25%, the capsule dry <22%, 70% lithium injection fluid, textile> 65%, mushrooms> 80%, aging test> 90%. Second, the air conditioning why not replace industrial dehumidifier? 1, a small amount of desiccant air conditioning, dehumidification depth less industrial dehumidifiers, because the air conditioning is mainly used to cool power, and power is mainly used for industrial dehumidifier dehumidifier. 2, usually the warehouse does not allow cooling and dehumidification, because the goods will cool on hot air condensation in transit but more moisture, air conditioning and industrial cooling and dehumidification dehumidifier is flat or slightly warm temperature dehumidifier. Contact: Miss Ding Mobile: 18925402588 Website: http: //www.dg-jinlei.com