Loudspeaker, Amplifier, Conference System manufacturer / supplier in China, offering Surface Mount Ceiling Speaker for Clear Audio and Easy Installation, 2-Way in-Ceiling Speaker with Kevlar Woofer and Crossover for High-Fidelity Audio in Home and Commercial Spaces, Commercial Audio 50W Ceiling Speaker 6 Inch Powerful Audio with 6.5" Glass Fiber Cone & Back Cone AC Power Supply Made ABS and so on.