We have received the ISO9001:2000 certification authorized by the SGS in Switzerland.

First grade competence in sound project by China Entertainment Technology Association

QC080000 International Standard Certificate

Director Unit of CETA (China Entertainment Technology Association)

Director Unit of China Association of Recording Engineers

Among the Top10 pro audio brands authorized by “hc360.com”---the most authoritative pro audio media in China

LVD CE Certificate of QH Series Digital Amplifier

EMC CE Certificate of QH Series Digital Amplifier

LVD CE Certificate of AUDIONET Processor

EMC CE Certificate of AUDIONET Processor