The marine environment can be very destructive to cargo and ship facilities. Moisture and salt can cause severe corrosion, and condensation and other problems are common. Humidity problems can also arise due to temperature changes caused by the "temperature lag" caused by the quality of the cargo itself, both in the short term (between day and night) and in the longer term (moving from one climate zone to another). Shangdao dehumidifiers are used on ships transporting chemicals, on floating production storage and unloading type ships, in the shipbuilding and repair industries, and can also be used in sandblasting and painting processes to protect equipment from corrosion and condensation damage.