... EN1279 BS5713 ASTM E546 standards 4.Triple layer and double silver IGU glass, U value lowered ... value and low RHG value 6.IGU glass can reduce heat loss, save 30~50% energy, reduce 30~45dB noise, ... Insulated units are also highly effective in reducing unwanted sound transmissionColor 1.Blue, Weihai Blue, Ford Blue, ... T 30% in advance Applications 1.Windows and Doors 2.Curtain walls 3.Furnitures 4.Shelves ...