... /ROHS / PSE 5, OEM/ODM. Small Humidity Control Box For Camera Basic Information Product NameProduct ModelOutside Size(mm)Inside Size ... no dropwater and also no noise. 4, Widely suitable for saving videotape equipment, personal precious collection, optical diaphragm, ... etc35%-25%Precision measuring tools,optical instruments,a light source,detector,lenses,lens,pharmaceutical raw materials science. ...