the main products of East sun electronics are following: PA Horn Speaker;horn DRIVER UNIT ;car Piezo Tweeter;alarm car ; WARNING LIGHT, SIREN & ALARM SPEAKER PA-HORNSPEAKER ;NSU-SIRES DRIVER ;DRIVER UNIT ;BUILT-IN TRANSFORMERDRIVER COMPRESSIONDRIVER ;TRUMPET HORN ;HORN WITH TRANSFORMER ;HORN driver PA-COLUMN SPEAKER ;PA- CILING SPEAKER ;PA-TRANSFORMER ;DIAPHRAGM