Most suitable in the audio-visual equipment room, conference room, kindergartens, ladder classrooms, academic halls, training rooms, ordinary classrooms, training courses and other places to use; the formation of reflective (green, white or color) metal blackboard can be used directly; the metal blackboard, the glass blackboard or other blackboard, which do not meet this condition, after treatment and laminating, You can also use liquid chalk.
The normal use cost of liquid chalk is actually the same as that of ordinary dry chalk, but it may cost a little bit more when the initial use is unskilled.
