In recent years, the use of glass tile increasingly widespread, now glass tile has become the country's current strong advocate and promote a new generation of light green building materials, products and environmental protection, energy conservation and recycling, glass tile its unique performance advantages to win the architectural profession widespread attention and recognition, market prospects are very broad. Glass tile surface layer material (most critical), the choice of surface material directly affects the life of glass tile, usually chosen most outstanding ultra-weather surface modified PMMA co-extruded material case, the product is a direct result of weathering of glass tile life. Secondly, there is relatively poor ASA co-extruded material surface, we can know from the chemical point of ASA is second only to weather co-extruded PMMA surface material, of course, in general, synthetic resin tile is directly dependent on the quality of the surface layer materials, synthetic resin tile surface materials account for more than 70% of the cost, while the cost of its PVC resin surface layer of the following synthetic resin tile is less than 30%, so some manufacturers of synthetic resin tile with other materials posing as PMMA, produced in use 1-2 years discoloring, directly affect their actual life.