Glaze of the closure has expanded perlite (also known as glassy perlite), the company is nearly a decade with the domestic research department of a successful cooperative R & D thermal insulation of new materials. The product is successfully developed, breaking the United States, Japan, and France's technological blockade, a comprehensive upgrade of the level of processing industry in China perlite, saving the country valuable foreign exchange resources. The product selected special requirements of ore particle size, expanded in the electric heating mode, temperature and materials through the precise control of endurance, so that the product surface melting, stomatal closure, while the internal honeycomb structure of micro-spherical appearance. Compared with conventional porous perlite, in addition to retaining heat insulation, sound insulation properties, but also has high strength, low water absorption, easy and good features. The product can be used as light aggregate new building materials industry; as the light part of the refractory industry alternatives floating beads; emulsion explosives industry as a substitute for glass beads, with a very broad application prospects. 
 Applications 
 External wall insulation mortar, insulation putty; light decorative panels, ceiling panels, acoustic panels; insulation coating; light wall; Refractories; thermal pipe insulation; industrial furnace insulation; explosive density adjustment; petroleum, chemical engineering; Fire material; filter aid