main function is to reduce the heat exchanging from glasses outsides,which offers outstanding results of saving energy. There are two production lines for mid-empty glass (the lines are equipped with pure-water system and coating-distinguishing system). The supporting equipment includes aluminum bar auto-folding machine, molecular-sieve filling machine, and double-group separate gluing machine. The equipment could produce coated mid-empty glass, low-e mid-empty glass, bend aluminum-bar mid-empty glass, office mid-empty glass etc. the daily output is 1500 sqm.