electronic components & parts- (1) power transformers, AC/DC ( AC to DC) & AC/AC ( AC to AC) adapters ( adaptors), converters, switching power supply ( supplies), battery chargers, AC/ DC ( AC to DC) inverters, ballasts, audio frequency transformers, line matching transformers. (2) single-sided boards, carbon boards, silver boards. (3) silver ink jumper PCB, carbon-printed PCB, LED lightings. (4) audio & video products- home theater system, Hi-Fi speaker system, 3D & surround speaker system, multimedia PC audio system, car speakers, car subwoofers, car separate system, marine & in-wall speakers system, subwoofer & amplifier accessory ( accessories). (5) silicone steel laminating transformers, common mode chokes, coil & transformers, tape & reel packing, PCB assembly ( assemblies), soft ferrite coil, SMD coils & transformers, SMD power inductors.