You cannot use it to documentation and mailing. Do not expose to temperatures greater than or equal to 60 degree C. Ink becomes colorless. There is a clear handwriting to be around -10 degree C to return. Depending on the paper like thermal paper, may not suitable for deletion. Please do not leave it in direct sunlight.
Extra-fine 0.5mm ball
Black / red / blue
Multi-colored gel ink ballpoint pen
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