Reflection Each of the three MIRO-SUN® products is highly reflective and each is tailored to the individual needs of different solar and daylighting applications. MIRO-SUN® is weatherproof with a nano-ceramic- top coating to make it exterior-capable while retaining its high solar reflectivity. MIRO-SUN® is in use for CPC reflector mirrors, ( compound-parabolic-concentrators.) MIRO® 4400 is also used for CPC systems when the system is protected from the exterior environment. MIRO-SUN® is additionally used as mirrors in solar-thermal-collector-systems as a concentrator for heat-tubes. Its lightness allows simple cost-effective fixing systems to be used connecting the ALANOD MIRO® mirrors to the supporting framework of the collector. Both MIRO-SUN® and MIRO® 4400 are used in daylighting systems. MIRO-SUN® PV is used for photovoltaic collectors. Here a specially tailored MIRO® optical coating has its maximum reflectivity at higher wavelengths than the photopic-curve maximum of natural daylight. MIRO-SUN® PV matches the needs of photovoltaic silicon for best reflectivity at 750 to 950 nm - allowing MIRO® mirror concentrators to multiply the output of each photovoltaic cell..