- Feb 09, 2018 -
The main protection index, UPF and UVA values, the new national standard rules: Only when UPF> 30, UVA transmittance <5%, can be called anti-UV products; UPF value is greater, the UV The better the function
Parasols and other umbrellas the biggest difference is that there is UV coating, and then play the role of reflection and obstruction UV penetration through the umbrella. In the case of the same fabric quality, darker the better the role of anti-UV. If indoors to check whether the UV, you can check the light of umbrellas light transmission, the more clear protection function is worse.