How long can the agricultural film in the Shandong region be used if an anti-aging agent is added?

Shandong Province is located on the eastern coast of China, between 34°22.9′ and 38°24.01′ north latitude. Its climate belongs to the warm temperate monsoon climate type. Precipitation is concentrated, with rainfall and heat occurring in the same season, and the annual average temperature is between 11℃ and 14℃. It can be seen that Shandong has a relatively high latitude, more precipitation, and a lower average temperature. All these will have a direct or indirect impact on the aging of agricultural films. 

At present, the anti-aging system of agricultural films generally adopts the combination of antioxidants and light stabilizers to solve the problem. Commonly used light stabilizers are hindered amine light stabilizers and benzophenone ultraviolet absorbers. Antioxidants are hindered phenol antioxidants and phosphite antioxidants. After adding these anti-aging agents, the agricultural film can be used for about 3 to 5 years. However, during the use of the agricultural film, attention should be paid to its use and maintenance.