PT. Dwitunggal Karunia Gemilang is widely recognize as the leader in full-service Architectural Acoustic, Professional Audio - Video, Stage Lighting & Automation System integration for house of worships,  cinema, auditoriums, education facilities, corporate meeting room & training centre, sports hall, broadcast studio, entertainment centre, industrial & modern residential.

The company start the operation at 2003 as the first full scale cellulose insulation manufacture in Indonesia with the Celtic brand besides their main services in architectural acoustic & professional audio designer contractor.

In 2008 their expanding their services in Video, Stage Lighting & Automation System. And become a dealer for various high speciality brand such as Meyer Sound, Genelec, S2CEB Cables, EIKI Projectors.