The current national standard in China is according to Article 845-01-05 of GB/T2900.65-004 “Electrical Terminology Illumination”.
Ultraviolet radiation is defined as optical radiation with a wavelength less than that of visible radiation.
And the ultraviolet radiation wavelength in the range of 100nm-400nm is defined.
As follows: 315nm-400nm as UVA. 280nm-315nm is defined as UVB. And 100nm-280nm is as UVC.https://www.tank007.com/product-category/uv-flashlight/

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