work content - Check the people in/out (supervisors, construction workers, subcontractors, visitors...), make sure not to let strangers infiltrate the construction site. - Remind workers not to properly implement safety protection measures before entering the construction site; - Control the means of export - import materials through the door must have valid papers; - Control assets, equipment in/out the construction site; - Guide the vehicle to the right place - Monitor the parking lot to ensure that there is no loss or damage to property;