... 6) Sound and heat insulation: Superb sound insulation for freeway barrier and super thermal insulation save energy. 7) ... you request)3. Applications: 1) Roofing light sheet and sunshade for office building, department store, hotel, stadium, school, amusement center, ... hospital, ect. 2) Skylight, lighting for corridors, balcony, passages and subway entries, walkways. 3) Do- ...