The penetration of UVA is very strong, OK and penetrable glass and cloud layer, and no matter why be being planted,weather situation falls, UVA ray is existence of years full day is full.

• UVA的穿透力非常强，可以穿透玻璃和云层，而且无论在何种天气状况下，UVA射线都是整日整年的存在。