Wholesale, retail, sale:
-material plumbing, heating, gas plumbing, product range for utilities, sanitary ware.
Water, heating, gas:
-boilers, burners, heaters, stoves, fireplaces, heaters
-accessories, fume extraction, plate heat exchangers, collectors, vessels
-pumps
-pipes, fittings, flanges
-mounting, insulation, moldings
...