According to construction materials industry: Panel is a new type of material "Green material" in construction industry manufactured to using modern technology, composed of 3 layers:
The two outer shells are made of galvanized steel sheet or stainless steel or aluminum sheet.
The insulation foam layer in the middle is made of insulating materials:PU (Poly Urethane); Rockwool; EPS (Expand Polystyrene); Glasswool.
According to its use, the Panel can be called an insulation sheet, sound insulation as its main function.