For some community groups, the chair is considered as one symbol of power. The chair also shows the dignity or social status for a particular community. Then a king will sit on the chair called the throne of greatness, while the maids and servants would sit on the floor. Seats are regarded not only as symbol of authority, but also as a symbol of stability so that the era of the 1990s the term when one has sat, he will forget to stand. Since the 14th century, the seat was created more diverse. Especially since the presence of high-tech machinery, there appear many different types of chairs one...