material:abs and buzzer Products : 1、Professional loudspeaker parts: speaker handle,3-21 inch steel grill,metal mesh sheet, plastic horn, protective corner of speaker cabinet, terminal, junction box,piezo speaker, echo/vent tube, speaker drive parts, karaoke speaker panel 2、Ceiling speaker parts: ceiling speaker cabinet, ceiling speaker panel, wall speaker cabinet，boat proof-water ceiling speaker frame 3、Car speaker parts: speaker grille, speaker cover, speaker panel & cabinet, speaker gasket, speaker frame 4、Power amplifier parts: panel. knob