Business scope: Electronic Product,
Instrumentation,
Speakers,
Business,
Delay Reverb,
Mechanical Equipment,
Owned Property Leasing And Property Management,
Production And Marketing,
Three To One Make Up,
Megaphone,
Raw And Auxiliary Materials Required For Scientific Research,
Import And Export Of Spare Parts And Related Technologies,
Microphone,
Operating The Enterprise S Processing With Imported Materials And,
Earphone,
Operate The Production Of The Enterprise And Its Member Enterprises,