QualificationFocusing on the one-stop service of research and development, design, production, and sales of mainstream audio products!
After-sales service 5-star certificate 
Excellent suppliers of government procurement 
China recognized the international mutual recognition test report. 
trademark registration certificate 
National compulsory product certification certificate 
National compulsory product certification certificate 
Computer software copyright registration certificate 
Test report of line array speaker combination 
Test report of professional pure post-stage power amplifier 
Professional audio test report
