STABRO activity:

STAIR DESIGN AND PARTS, MANUFACTURE AND INSTALLATION:
  Wooden stairs
  Stairs with different steel beams
  Stairs on concrete construction
  Stairs with console construction
  Stair design, visualisations, drafts

STAIR COMPONENTS MANUFACTURING AND ASSEMBLY:
  Railings and fences
  Stair steps

DOOR MANUFACTURE AND INSTALLATION;

CUSTOM INTERIOR ELEMENTS MADE OF WOOD AND STEEL:
  Diaphragm walls
  Sills, window sills, and other items.