Business scope: Test,
Recording Pen,
Video Surveillance,
Loudspeaker,
Teaching Instrument,
Translator,
Smart Home,
Mobile Hard Disk,
Automatic Retractable Door,
Cell Phone,
Car Charger,
Ram,
R D And Sales Of Office Products,
Wireless Headset,
Teaching Equipment,
Smart Home Products,
Mobile Power,
Smart Parking Equipment,
Monopoly Etc,
Design,
...