What is aging?
Aging refers to the negative effect of climate on materials or products, which usually leads to premature product failure or other problems. Consumers spend hundreds of millions of dollars annually to maintain and update aging products, and the main cost is to update the failed materials caused by outdoor exposure.
Aging factors The three main factors that cause aging are: solar radiation (light energy), temperature and water (humidity). But this is not only a question of how much each factor needs to eventually cause the degradation of the material, because the difference between the degree of solar radiation and humidity and the temperature cycle will have a great impact on the exposure material. These factors, as well as some secondary factors, such as air pollution, biological phenomena and acid rain, cause "aging" together.
Seven major climates The World Meteorological Organization (WMO) divides the world's climate into seven major categories. They are:
Desert climate subtropical climate humid low heat climate humid subthermal climate polar climate tropical climate unclassified climate
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