How long is the anti-riot shield valid

We all know that food has a shelf life, so how long is the riot shield valid? Today, Xinxing answers the validity period of the anti-riot shield for you. The validity of the riot shield directly determines the safety of the riot shield when the law enforcement personnel are performing their tasks. The riot shield is so important, so how long is the validity of the riot shield in the process of use? Xinxing suggested that if the surface of the anti-riot shield is scratched or cracked, the shield should be stopped immediately, indicating that the anti-riot shield is valid; If the transmittance of the shield is reduced due to external friction, the shield should be stopped, indicating that the anti-riot shield has expired; and if the connection of the shield handle or armband is loose, it should also be stopped, indicating that the anti-riot shield has expired. Xinxing reminds that improper daily maintenance of the riot shield will also affect the validity of the riot shield, so we should pay attention to: (1) Avoid prolonged exposure to sunlight and rain (2) Place in a ventilated and dry place (3) Discharge when not using the shield It is neat to prevent deformation, so the validity of the riot shield is very important.