Building low-e hollow glass LOW-E glass, also known as Low-E coated glass, is written in English Low Emmissivity province, it is a new type of special energy-saving glass. Before relies Low-E glass imported from Europe, the past two years, beginning in the country began the production and application, is becoming the first choice of contemporary architectural glass. LOW-E glass by technology to solve the contradiction between the traditional glass insulation performance and lighting performance, at the same time have good thermal insulation properties, has good lighting performance, while addressing the traditional glass of ill - "light pollution" problem. LOW-E glass has a summer heat, winter insulation performance. Effect of LOW-E glass in the glass industry is huge, and even spread within the industry, "The 21st century is the world's LOW-E glass" argument. It has good lighting, while there is no "light pollution" Because of its good thermal insulation and UV, green, energy-saving, environmentally friendly building materials and glass in the true sense. Outside glazing heat loss is a major part of building energy consumption, accounting for over 50% of the energy consumption of buildings. The study data show that the heat transfer surface of the glass to radiation, accounting for 58%, which means that the performance of glass to reduce heat loss from the change, the most effective way is to limit the radiation of its inner surface. Emissivity ordinary float glass up to 0.84, when coated with silver-based low-emissivity film, its radiation rate can be reduced to 0.15 or less. Therefore, Low-E glass building windows and doors, can greatly reduce the transfer due to radiation caused by the indoor and outdoor heat to achieve the desired energy savings. Nanhai District of Foshan City, Long glass factory /// Union building low-e hollow glass