Скачать или смотреть Effective parasols the best defense against the hot summer sun

Thus far this month there have been 10 days where ultraviolet levels in Taipei have reached excessive or critical levels. In this type of climate, it is important to have an effective parasol. One of the best defenses against the hot summer sun is a parasol. But choosing the right one can be difficult.Parasol VendorTraditional silver parasols have a UV coating on the interior. Later, the coating was moved to the exterior, where it's many more times effective at blocking the sun.A UV exposure meter can measure parasol effectiveness.Chang Pi-paiKainan High School of CommerceYou can see that the fluorescent agent still emits light, which demonstrates that it is still exposed to UV rays. Its anti-UV properties are poor.Tests show that with or without an anti-UV coating, parasols that are sufficiently thick are generally able to block most of the sun's harmful rays.