Melacoustic® melamine indoor sound-absorbing decorative materials are decorative materials based on lightweight flame-retardant porous melamine sound-absorbing cotton with an open porosity rate exceeding 99%. Melamine foam has inherent flame retardancy and excellent sound absorption and noise reduction capabilities, effectively capturing sound waves above 200Hz with a capture rate of over 95%. Through post-artistic processing, it can be used in various forms such as decorative paintings, decorative structural components, etc., for decoration and sound absorption in places like hotels, offices, office buildings, schools, hospitals, sports arenas, and auditoriums, providing a combined visual and auditory effect.