Yvonne Feng

Saiyang Electronic Technology Co, Ltd, China.  We mainly produce audio peripherals, such as karaoke amplifiers, pre-amplifier, professional audio processors, feedback suppressors, Digital equalizers, audio exciters, power sequencers, etc.
Contact：Yvonne 
E-mail：epsyaudio@gmail.com 
Phone/WhatsApp：+86 17288300199
Website: http://www.jmsyaudio.com/
Alibaba: https://syaudio.en.alibaba.com