Patent Certificate

TWS earphone testing machine

A noise reduction test device for wireless earphones

An audio test device for earphones

A test device for headphones

An audio analysis instrument with anti-drop function

A New Multifunctional Photoelectric Measuring Instrument

A multi-station audio testing equipment

A multi-spec test device for wireless earphones

A new test setup for wireless earphones

A dual-diaphragm horn testing device

Audio Test System for Earphone

multi-station monitoring system for Audio Equipments
Software Authorship Certificate

KK audio analyzer software V1.0

KK audio analysis software V3.1 (in application)
Enterprise qualification certificate

High-tech product certificate - audio analyzer

EU CE certification

High-tech Enterprise Certificate

ISO CERTIFICATE
