... 6 float+16mm spacer+6 toughened Low E DFG insulating glass unitAdvantages 1. SGG AGC and Pilkington reliable soft ... . Lisec automated soft Low E processing line and insulating glass line3. Excellent U value 1.1 W/m2- ... . Insulating glass could be combined by float clear glass, tinted glass, solar reflective glass, Low E glass, laminated glass, tempered glass, heat-strengthened glass and curved glass, ...