Bio-Chalk
A multi-purpose pen that can replace all writing instruments.
It helps teachers and students maintain health with no powder flown around when using for educational purpose, being applied for unique educational purpose for infants and children with safety even if they eat it along with being widely used for military and industrial use.
Bio-shell Chalk
With unique position of original technology of manufacturing environment-friendly chalk the powder of which is not flown about with a process of crushing marine waste of shells(waste shell) at high temp and dust-collecting, it contributes to reduction of carbon, main source of global warming, and contributes to advancement of board writing products with recycling of resources.
LOHAS Chalk
It has made feeling of board writing softer for minimizing wrist fatigue of teachers with enhancement of emitted chromaticity by preventing powder from being flown about with one stage upgrading of existing carbonic chalk.