UV protective clothing

Refers to the protective equipment for workers in various work activities that come into contact with artificial ultraviolet radiation sources (wavelength: 100-400nm). UPF＞40, When T (UVA) AV<5%, it can be called a "UV protection product"
Ultraviolet radiation. Ultraviolet radiation, also known as ultraviolet light, is electromagnetic radiation with a wavelength of 100-400nm. It is divided into long wave ultraviolet (UVA), medium wave ultraviolet (UVB), and short wave ultraviolet (UVC).
Time weighted average exposure limit
UVB: Daily exposure should not exceed 0.26 μ W/cm2 (or 3.7 mJ/cm2);
UVC: Daily exposure should not exceed 0.13 μ W/cm2 (or 1.8 mJ/cm2);
Welding arc light: Daily exposure shall not exceed 0.24 μ W/cm2 (or 3.5 mJ/cm2);
Maximum exposure limit
UVB: shall not exceed 1 μ W/cm2 (14.4 mJ/cm2) at any time;
UVC: shall not exceed 0.5 μ W/cm2 (7.2 mJ/cm2) at any time;
Welding arc light: shall not exceed 0.9 μ W/cm2 (12.9 mJ/cm2) at any time.