About 2 Trademarks found that are owned by Shenzhen Yihai Technology Development Co Ltd

Headphones; Cases for mobile phones; Cell phone battery chargers; Cell phone covers; Cell phone holders for vehicles; Cell phone mounts for vehicles; Chargers for smartphones; Computer peripherals and parts thereof; Covers for tablet computers; Ink cartridges, unfilled, for printers and photocopiers; Laptop computer cooling pads; Protective cases for cell phones; Protective cases for tablet computers; Protective covers and cases for cell phones, laptops and portable media players; Protective covers and cases for tablet computers; Protective films adapted for smartphones; Racks for loudspeakers; Recorded computer software for use in database management, use as a spread sheet and word processing and instructional user guides sold as a unit; Unfilled toner cartridges; Wireless earphones

The wording "YIHIKER" has no meaning in a foreign language.