JIS Z 9100:1987

This Japanese Industrial Standard specifies the phosphorescent safety sign boards, hereinafter referred to as the \"phosphorescent sign boards\", worked by using phosphorescent material to the safety signs of risk, relief, guide, etc. to be used for factories, mines, schools, hospitals, theaters, stations, underground passages, hotels, department stors, vehicles, ships, etc. However, except phosphorescent sign boards used with metallic material.