2015:Established a subsidiary Changzhou E-Sound Electronics Co.,Ltd

2012:Passed ISO9001:2008 standard certification

2007:"ROHS" standard

2003:Passed ISO9001:2000 standard certification

2000:Developed microphone and receiver

1998:Developed Multimedia Sound-Box and Car Speaker

1997:Developed Mobile phone Speaker

1996:Devoped PC/DVD/TV Speaker

1995:Developed mylar speaker

1994:Established Changzhou Duoxing Electronics Co.,Ltd with Taiwanese

1990:Developed buzzer

1989:Found Changzhou Duoxing Electronics Device Factory