Car Audio Installation Kits, Car Speakers, Wire Harnesses, Speaker Wire Harness, Cable Harness, Handfree Car Kit, Car Installation Kit, Auto Speaker, Digital Car Speaker, Loudspeaker, Audio BoxFounded in 1997, Shandong Jumboaudio Research is a car speakers, woofers, boom boxes, PA systems, wall speakers; car audio equipment. Our dedicated R&D staff continually introduces tens of new products every year and meets the special, Car Outdoor Speakers, Stage Equipment, Electronic Wire ...