Outdoor Subwoofer Speaker, Stage Subwoofers, Professional Stage Loudspeaker manufacturer / supplier in China, offering 18inch W1815002 1500W Outdoor Subwoofer/High Power Subwoofer/Altavo0z Professional, 18inch Pd 5inch Voice Coil PA Speaker Sub Woofer, W155072 15 Inch Electronic Component Driver /Cone Speaker and so on.