Yellow hard safety helmet on wooden floor at construction site symbol of worker head protection workplace concept labour job 免版税库存图片 yellow hard safety helmet on wooden floor at construction site symbol of worker head protection workplace concept labour job
Worker installs insulation in a building under construction wearing hard hat and mask he uses gloves for safety 库存照片 worker installs insulation in a building under construction wearing hard hat and mask he uses gloves for safety
Worker builds wooden structure in daylight at construction site a walks through frame of building under he wears hard hat and 库存图片 worker builds wooden structure in daylight at construction site a walks through frame of building under he wears hard hat and
登录 
