Safety signs, ladders, pumps, and construction supplies are tools for performing construction work safely and smoothly. Scaffolds, scaffolding platforms, work stools, and aerial work platforms that help work in high places are selected according to the work space and height. Tools that indicate dangerous places and guide you to safe places are necessary so that you can perform construction without any trouble. Safety cones, chain barrier posts, and construction fences that point to hazardous areas are made of durable resin such as polypropylene. There are a variety of sign tools, such as "no entry" display flags, stickers, and magnets attached to metal surfaces. By using construction lights and traffic batons, it is possible to prevent pedestrians from accidentally entering construction sites. In addition, it is convenient to have a screw compressor or power generator that can create a power source anywhere.