Repairing a cracked China Red Granite kitchen countertop edge can be a tricky task, but it is possible to do it yourself with the right tools and materials. Here is a step-by-step guide on how to repair the cracked edge:

1. Clean the cracked area: Use a soft cloth or sponge to clean the cracked area thoroughly, removing any dirt or debris that may interfere with the repair process.

2. Assess the damage: Examine the crack to determine how deep it is and whether any pieces of the granite have come loose. If there are loose pieces, carefully remove them and set them aside for later.

3. Fill the crack: Use a high-quality granite epoxy resin to fill the crack, following the manufacturers instructions. Make sure to use a color-matched resin to blend in with the surrounding granite.

4. Blend in the epoxy: Use a fine-tipped artists brush or a toothpick to carefully blend in the epoxy with the surrounding granite. Wipe away any excess resin with a clean cloth.

5. Let the epoxy cure: Allow the epoxy to cure for the recommended amount of time, typically 24 hours, before using the countertop again.

6. Polish the repaired area: Use a polishing compound specifically designed for granite to polish the repaired area and restore its shine.

7. Replace any loose pieces: If you removed any loose pieces of granite earlier, use a strong adhesive to reattach them to the countertop edge.

By following these steps, you can effectively repair a cracked China Red Granite kitchen countertop edge and restore its beauty and functionality. If you are unsure about your ability to repair the crack yourself, consider hiring a professional stone restoration specialist to do the job for you.