Profile: Alsigns-Surelite Ltd. is a supplier of luminous borosilicate glass tube products. We supply products for usage in exit signs, advisory purpose, indicator units and as warning artefacts. We cover industries like shipping, aircraft, submarines, defense, commercial, transport and building industries. Our products serve in difficult terrains like deserts, forests, mountains, off-shore and are suitable for climates such as construction, cinemas, schools, hospitals and historic buildings. Our gaseous tritium light source devices are used to illuminate dials and panels, mark exits & emergency escape routes and also to give visual aid or comfort in dark or night conditions. These light sources are contained in miniature sealed glass tubes made up of borosilicate glass. The colour of the light emitted by the gaseous tritium light source is determined by the phosphor coat used. Our directional signs and markers for military and civil use have inbuilt encapsulated hydrogen gas light-source technology, tritium to give full range visible identification. For each marker we house the indicator arrow, chevron or other symbol in a black anodized aluminium frame for style and weather durability.