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Outdoor billboards become a "timed bomb", "Flying to the disaster" coming from time to time! "Safety Screw" to tighten

Large outdoor advertisements lack safety certification, becoming a timed bomb hanging on the top; store signing only with glue, flying from time to time; outdoor advertising sign long is in an ignorant state, zombie signage hidden danger to highlight & hellip; & hellip; according to half a month, In recent years, some cities outdoor advertising […]