Voice Coil, Flat Wire Voice Coil, Speaker Part manufacturer / supplier in China, offering Round Copper Winding Voice Coils Four Layers on The Black Aluminum Former Materials with High Power Type, 1208-8 Sps Bwx Black Window Speaker Cone Kevlar Impregnated Cellulose, 4inch Dual 4 Ohm 8-Layer Flat Aluminum Voice Coil Wet Wound and so on.