Maybe you are a speaker unit purchasing manager, who are looking for high quality speaker unit, and Changzhou Esuntech Co.,Ltd. are a professional manufacturer & supplier that can meet your needs. Not only speaker unit we produced have certificated the international industry standard, but we can also meet your customization needs. We provide online, timely service and you can get professional guidance on speaker unit. Don't hesitate to get in touch with us if you are interested in speaker unit, we won't let you down.