UV is the abbreviation of English ultraviolet, that is, ultraviolet light. Ultraviolet light (UV) is invisible, is visible outside the purple light of a section of electromagnetic radiation, wavelength in the range of 10~400nm. It is usually broken down into the following paragraphs according to its nature:
A vacuum ultraviolet (VUV) with a wavelength of 10--200nm
B Short-wave ultraviolet (UVC) with a wavelength of 200--280nm, which can be sterilized
C Medium wave Ultraviolet (UVB), Wavelength 290--320nm
D Long wave ultraviolet (UVA), wavelength 320--400nm, can be used for light curing printing
Ultraviolet (UV) is used in industrial production, and long-wave UV (UVA) is commonly used internationally.
Note: NM is nano
What do you mean, "Nano "? "Nano " is the translation of English Namometer (abbreviated: NM), is a unit of measure, a nanometer of one out of 10,000 mm, also one-zero meters, about the equivalent of 45 atoms strung together in length.