Devices for lighting, heating, steaming, cooking, cold storage, drying, ventilation, water supply and sanitation.

So the electric kettle, rice cooker and induction cooker you listed should be in 11 categories.

trademark registration category 2 1

household or kitchen utensils and containers (not made of precious metals or plated with precious metals, etc.); Combs and sponges, brushes (except brushes), brush-making materials; Cleaning appliances; Steel velvet; Unprocessed or semi-processed glass (except building glass); Glassware, porcelain and pottery not included in other classes.

So your list of thermos bottles, bottles, caffee pots, large and small kettles and thermos barrels should be in 21 categories.