Shini " optical " compact dryers combine the function of dehumidifying, drying and two-stage conveying into one single unit, specified for the production of " optical grade " products, such as lenses, LCD backlight panel, compact discs etc. They feature honeycomb rotor for dehumidifying, ensuring continuous and constant low dewpoint. Under ideal conditions, it can provide lower than -40º Cdewpoint dehumidified air.