Installation of plumbing; Installation of refrigerating apparatus; Installation of water pipes; Installation, maintenance and repair of water supply apparatus; Installation, maintenance and repair of kitchen appliances; Installation, repair and maintenance of cleanroom facilities and equipment; Installation, repair and maintenance of heating equipment; Kitchen equipment installation; Kitchen exhaust cleaning services; Repair of electronic apparatus; Repair of heating apparatus; Repair of water supply apparatus; Cleaning and repair of boilers; Electric appliance installation and repair; Freezing equipment installation and repair; Installation and repair of freezing apparatus; Installation and repair of freezing equipment; Installation and repair of extractor hoods for kitchens; Installation of kitchen appliances; Installation of kitchen cabinets; Installation of kitchen equipment; Installation, maintenance and repair of machines; Installation, maintenance and repair of kitchen equipment; Installation, maintenance and repair of kitchen furniture; Maintenance and repair of heating installations; Maintenance of kitchen appliances; Office machines and equipment installation, maintenance and repair; Pipeline installation and repair; Plumbing installation advisory services; Plumbing and gas and water installation; Providing information relating to the sharpening of scissors and kitchen knives; Provision of information relating to the sharpening of scissors and kitchen knives; Pump repair and maintenance; Repair of household and kitchen appliances; Washing of extractor hoods for kitchens