Guangzhou Langjun Audio Co., LTD, a professional manufacturer of outdoor portable speaker, professional amplifier, professional stage and public address speaker system. We focused in audio industry since 1994, over 24years' growth and development, acquired an enviable reputation among clients and peers.Keep good faith as the basic concept, professional technology as the core, track every details meticulously, control the quality strictly, grow up with customers as the operation principle, offer ... View detail