In modern factories, manufacturing workshops, and large logistics warehouses, orderly floor zoning is the foundation of standardized production and pedestrian safety. For many years, facility managers have relied on floor paint and adhesive stickers to divide walkways, equipment operating areas, material storage zones, and hazard boundaries. However, these traditional static markings easily fade, peel, and blur under frequent forklift rolling, dust accumulation, oil pollution, and daily washing. Constant repainting and replacement waste labor costs, delays production, and cannot maintain long-term clear safety prompts.Today, more industrial sites are upgrading to virtual light line marking solutions. Different colored projected lines carry unified international industrial safety definitions, allowing workers to quickly identify zone attributes at a glance. Combined with high-performance industrial projection equipment, these color-coded safety lines create stable, eye-catching, and maintenance-free factory zoning. Below we explain the practical safety meaning of each color and introduce the powerful application value of the Noparde Industrial Line Projector.