About 1 Trademarks found that are owned by Yang Zhaozhao

Closed circuit TV systems for security and surveillance, namely, cameras, switchers, monitors, microphones, and recorders; Hand-held microphone sleeves; Loudspeakers, headphones, microphones and CD players; Microphone boom pole; Microphone cables; Microphone modules; Microphone stands; Microphones for communication devices; Microphones; Remotely-controlled sub-aquatic video camera containing a TV camera, transmitter, receiver and microphone to record, detect, measure, survey and locate objects underwater; Speaker microphones