Wholesale, retail, sale:
-water, water, gas
-installation material:
-copper, plastic, galvanized pipes including fittings
-boilers, radiators, hot water heaters
-heating, stoves, pressure vessels
-fittings, waste, hoses
-home waterworks
-sanitary and furnishing items:
-ceramics, bathtubs, faucets
-showers, flushing ...