Q.What is the difference between storage temperature/humidity and preservation temperature/humidity?

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A.Storage Temperature and Humidity (According to the Instruction Manual)
When storing a power supply unit, the temperature and humidity should be controlled in an ambient environment of a factory, warehouse, etc., with the power supply unit stored in the packing box as a rule.
As a guideline, our company sets the temperature and humidity at an optimum range to ensure that the products don’t deteriorate easily.
Although there is no problem in storing capacitors at temperatures and humidity exceeding this range, please be aware that high temperature environments may affect the life of capacitors.

Storage Temperature and Humidity (Based in the Specifications)
When the power supply is installed in the customer's equipment, it should be stored in an environment where the temperature and humidity levels will not cause the unit to deteriorate while it is not in use.