Annealed glass is glass produced without internal stresses imparted by heat treatment, i.e., rapid cooling, or by tougheningor heat strengthening. Glass becomes annealed if it is heated above a transition point then allowed to cool slowly, without being quenched. Glass is treated with heat in order to change its properties by the annealing process. Annealed glass is the most common glass used in windows. Annealed glass is also known as a standard sheet of float glass. Annealing is actually a process of slowly cooling glass to relieve internal stresses after it is formed. The glass, formerly annealed on shelves in a melting furnace, is now usually carried on rollers through temperature-controlled kiln known as a Lehr (annealing ovens). The shaped glass is annealed to relieve stresses caused by manipulation, then is slowly cooled. Glass which has not been annealed is liable to crack or shatter when subjected to a relatively small temperature change or mechanical shock. Annealing glass is critical to its durability. If glass is not annealed, it will retain many of the thermal stresses caused by quenching and significantly decrease the overall strength of the glass.

Reduce Temperature By Reducing IR (Infra Red) Heat Rays The S-LEC® Solar Control film drastically reduces transmission of Infra red rays contained in sunlight while maintaining a high level of visible light. Blocks Over 99% of Harmful UV (Ultra Violet) Rays UV rays in sunlight not only fade color, age plastic and other furnishing, it can also cause sunburn, skin cancer and retinal damage. Free Radio Wave Transparency Unlike the old XIR technology, NAGS solar control glass lets radio waves permeate completely, eliminating a major impediment to effective in-car mobile communication and ETC (Electronic Toll Collection) systems. Maintain Maximum Visual Clarity In All Driving Conditions NAGS solar control glass meets the Australian Standard of over 75% VLT (Visual Light Transmittance). ECO-Friendly NAGS solar control glass will provide more natural comfort with less need for air-conditioning, less burden on car engine and cooling systems as well as less fuel consumption and carbon dioxide emissions.

Tempered Glass Up to four to five times stronger than annealed glass of equal thickness Higher resistance to thermal stress than annealed and heat-strengthened glass When broken, breaks into numerous small pieces Meets safety glazing requirements Heat Strengthened Glass: Heat-Strengthened Glass is produced similarly to tempered glass. Heat-Strengthened Glass is approximately twice as strong as annealed glass with significantly greater resistance to thermal stress when compared to annealed glass of equal thickness. Heat-Strengthened Glass is NOT considered a Safety Glass product as defined by the above mentioned glass standards, and typically breaks into larger pieces than tempered glass.