7 electric vacuum cleaners for household purposes; self-propelled automatic vacuum cleaners utilizing cloud-computing systems for household purposes; self-propelled automatic vacuum cleaners for household purposes; self-propelled automatic vacuum cleaners, namely, robots utilizing cloud-computing systems for household maintenance having ion generating function; self-propelled electric automatic vacuum cleaners, namely, robots for household maintenance; electric vacuum futon cleaners for household purposes; electric washing machines for household purposes; electric washing machines having drying functions for household purposes; dishwashers for household purposes; electric wax-polishing machines for household purposes; electric food blenders for both household and industrial purposes; electric juicers for household purposes; electric vacuum cleaners for industrial purposes; self-propelled automatic vacuum cleaners utilizing cloud-computing systems for industrial purposes; self-propelled automatic vacuum cleaners for industrial purposes; self-propelled automatic vacuum cleaners, namely, robots utilizing cloud-computing systems for industrial purposes having ion generating function; self-propelled electric automatic vacuum cleaners, namely, robots for industrial purposes; electric washing machines for industrial purposes; dishwashers for industrial purposes; electric juice extractors; electric juicers for industrial purposes; grating machines for vegetables; electric food processors for household purposes; food mixing machines for industrial purposes; food peeling machines for industrial purposes; food cutting, chopping and slicing machines for industrial purposes; food preparation and beverage processing machines; electric wax-polishing machines for industrial purposes; robots for luggage carriers; elevators; static removal equipment