Long afterglow luminescence is a phenomenon in which a substance continues to emit light even after the excitation light has stopped. Long afterglow luminescent materials do not contain toxic heavy elements and can be excited prior to detection and imaging, enabling biosensing and imaging under "no-

Long afterglow luminescent material is referred to as long afterglow material is a photoluminescent material. It is a class of material that absorbs energy and continues to emit light after excitation stops, and is a promising material for application.Long afterglow material is one of the earliest r

Evacuation signs should be made of non-combustible materials, otherwise they should be outside with a protective cover made of glass or other non-combustible transparent materials. Cover. In other words, except for the signs made of aluminum alloy and other non-combustible materials as the base mate

Article 1028 of the "Fire Code for Building Design" stipulates that the evacuation aisles and main evacuation routes of the dance and entertainment venues, underground stores and the ground or the wall near the ground should be set up with luminous evacuation signs. The design of high-rise civil bui