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UVA is also called photochemical ray because many kinds of adhesives, fluorescence, and other chemistries react to UVA light. For the reason, its potential uses are uncountable, including UV curing/printing/coating, skin therapy, bank note detector, bio-weapon detector, air purification, etc
 

Applications
- UV curing systems, UV coating/printing assemblies for PVC, film, glass materials, and etc.
- Security products such as Bank note detectors, Bio-weapon Detectors, Crime scene inspection, etc.
- Phototheraphy devices to treat skin diseases including psoriasis, rickets, eczema, jaundice, and atopic dermatitis.
- Automotive leak detector, Food checking.
 
It has well known that UVB light exposures can be hazardous to human eyes and skin, but also UVB, often called as a dorno ray or a health ray, is assumed to be a beneficial to human health, UVB produces vitamin D in the skin, and prevent skin cancer caused by inefficient UVB exposure.
Also in combinations of UVA (or by it self) UVB has become an increasingly popular and effective treatment for psoriasis, vitiligo, eczema, and other skin conditions. Most effective in case of psoriasis is UV light with wavelength of 311 nm
 
Applications
- Sterilization systems to purify water, surface, and air
- Analysis of Minerals
- EPROM Erasure
- High Security UV marks
 
UVC rays, also called as germicidal rays, are the highest energy, most dangerous type of ultraviolet light.
With that energy, it destroys DNA & PNA in microorganisms such as bacteria, viruses & mold, Thus, it generates Ozone.
Especially 254.7nm is most effective wavelength for disinfections
 
Applications
- Water/Surface purification system
- Laboratory testing devices