At some time ego, holes in buildings are not an uncommon sight. In fact most buildings showed signs of wear and tear, chewed-up walls, mangled and scarred door frames, broken and peeling cornners. It was impossible for building managers and maintenance crews to keep up with the damage. Just than a new product was introduced to protect them from the people who use them. Expansion joint systems that protect building against mother nature s movments. Window Techs India obsess over safety, healthiness and appearance and put them through exhaustive testing.