... Building industry Outdoor application Roof, structural balcony, panels, window sills, window frames, gates, garage doors, rolling doors, booths, shutters, ... ), refrigerators, etc.Indoor applicationRoom doors, dividing walls, door frames, light house steel structures, sliding doors, screens, ceilings, ... hardnessGB/T13448-92(ASMD3)≥FImpactGB/T13448-92≥9T bending ( d= ) 80GB/T13448-92(NCCA-19) ||Class-B ...