[ Problem Point ]
Poor health due to lack of vitamin D.
[ ⇒Kaizen Point ]
Exposure to ultraviolet rays (UV-B) with a wavelength of around 300 nm for about 10 minutes a day,
Vitamin D was synthesized in the skin and the physical condition improved.
Related page:
No.1 Irradiation to ultraviolet curable resin 
No.3 Test of photocatalyst 
No.4 Permeability test of UV cut glass 
No.13 Glass lens ultraviolet (UV) cleaning 
No.6 The comparison test by the medium of Partial sterilization 
No.9 Drying of UV printing 
No.7 Weather resistance test of the resin plate 
No.8 Weather resistance test of painting