Professional sound, stage lights, public broadcasting, background music. Carrying on a variety of conference and conference lighting projects, an amplified audio project in the reporting hall of the school stadium, public broadcasting works, karaoke, family cinema, background music, etc. Main brands: us pal-specialized sound, british qsn-specialized sound, accelerator-lighted stage, acoustics of the gill map series, space-wide public broadcasting series, accelerator digital modulation stations and surrounding equipment。