About 2 Trademarks found that are owned by Shenzhen LetIanpai Technology Co LTD

Earphones; Battery chargers; Covers for tablet computers; Earphone accessories, namely, earphone cases; Earphone accessories, namely, earphone cushions, earphone pads, earphone cases, and earphone extension cords; Earphone accessories, namely, earphone extension cords; Electric charging cables; Power adapters; Protective cases for audio equipment in the nature of speakers, headphones, audio mixers; Smartphone battery chargers

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