1. Different objects: Category 31 corresponds to fresh fruits, vegetables, live animals, etc.: Category 4 corresponds to industrial oils and greases, waxes: lubricants: composites for absorbing, moistening and binding dust: Fuels and lighting materials: Candles and wicks for lighting.

2. Different properties: Category 31 corresponds to food, and Category 4 corresponds to industrial category. Trademark registration is the prerequisite and condition for a trademark user to obtain the exclusive right to use a trademark. Only trademarks that have been approved and registered are protected by law.