1. Use the electric iron: set the electric iron to the lowest gear, put the trademark cover on a flat surface, gently iron the trademark with an iron, and gently shovel off the trademark with scissors or a knife.

2. Use a knife: gently scrape off the glue around the trademark with the tip of the knife, and be careful not to scratch the surface of the snow cotton.

3. Use a hair dryer: aim the hair dryer at the adhesive part of the trademark to blow hot air to soften the adhesive, and gently scrape off the trademark with a knife.