One: The pen holder uses environmentally friendly materials, does not contain wood, paint, environmentally friendly and non-toxic, suitable for children
Two: The pen core and the barrel are formed in one piece, not eccentric or slippery
Three: Roll and cut into flowers, less chips
4: It is not easy to break the core, the height of about 1 meter will not break the core even if the nib is facing the ground
Five: The pen barrel is tough, breaks without barbs, and does not hurt children