Product information:
Specifications: 30*30 * 2.5CM high density flame retardant Black, 30*30 * 2.5CM high density flame retardant black adhesive, 30*30 * 5CM high density flame retardant Black, 30*30 * 5CM high density flame retardant black adhesive, 50*50 * 5CM high density flame retardant Black, 50*50 * 5CM high density flame retardant black adhesive
Level: B2
Function: sound insulation, sound absorption
Material: Polyurethane
Shape: surface concave-convex