37 Rental of plumbing equipment for bathroom; installation, repair and maintenance of wastewater purification installations and parts and fittings therefor; installation, repair and maintenance of water purifying apparatus and parts and fittings therefor; installation, repair and maintenance of water purifiers and parts and fittings therefor; installation, repair and maintenance of rainwater purification installations and parts and fittings therefor; installation, repair and maintenance of water purifying apparatus and machines, and parts and fittings therefor; installation, repair and maintenance of filtration apparatus for use in purifying service water and parts and fittings therefor; installation, repair and maintenance of telecommunication machines and apparatus; installation, repair and maintenance of electronic machines and apparatus; installation, repair and maintenance of shower stalls in the nature of shower cubicles sold as a unit; installation, repair and maintenance of prefabricated bathrooms in the nature of bath cubicles sold as a unit; installation, repair and maintenance of water closets; installation, repair and maintenance of electric washing machines; installation, repair or and maintenance of dishwashers; installation, repair and maintenance of washing apparatus; providing information relating to installation, repair and maintenance of wastewater purification installations and parts and fittings therefor; providing information relating to installation, repair and maintenance of water purifying apparatus and parts and fittings therefor; providing information relating to installation, repair and maintenance of water purifiers and parts and fittings therefor; providing information relating to installation, repair and maintenance of rainwater purification installations and parts and fittings therefor; providing information relating to installation, repair and maintenance of water purifying apparatus and machines, and parts and fittings therefor; providing information relating to installation, repair and maintenance of filtration apparatus for use in purifying service water and parts and fittings therefor; providing information relating to installation, repair and maintenance of telecommunication machines and apparatus; providing information relating to installation, and maintenance of electronic machines and apparatus; providing information relating to installation, repair and maintenance of shower stalls in the nature of shower cubicles sold as a unit; providing information relating to installation, repair and maintenance of prefabricated bathrooms in the nature of bath cubicles sold as a unit; providing information relating to installation, repair and maintenance of water closets; providing information relating to installation, repair and maintenance of electric washing machines; providing information relating to installation, repair and maintenance of dishwashers; providing information relating to installation, repair and maintenance of washing apparatus; rental of electric washing machines; rental of dishwashers; rental of washing apparatus for smartphones and glasses