Blog
Why Hajj and Umrah Need a Whisper Listening Device
- Claire
- March 29, 2023
- 0 Comments
The whisper listening device can clearly transmit the voice of the pilgrimage team leader to the team members.
Wireless Training System for School and Teaching
- Claire
- February 04, 2023
- 0 Comments
Wireless training system allows teachers to deliver instruction content to students using only the low decibel volume of normal speech.
