- Wet the parts of the body that need repairing first
- Proportion – Concrete powder 3:1 Water, below is powder 30g vs 10g water, then stirring few minutes
- Fill grout with a flatting tool to make it even, wait until grout dry ( half a hour at least )
- Polishing by abrasive paper from 180#
- Using the color fixing pen
English 
Chinese