What are the types of windowsill
According to the use of points: electric open, manually open, fire linkage;
According to the use of location: indoor doors, outdoor doors, doors and other doors.
According to the type of profiles: steel, ordinary aluminum, aluminum insulation, solid wood, aluminum composite, all glass, etc .;
According to open the form of points: push and pull, within the flat open, inside the open down, outside the flat open,
