A Century in Chettinad - Valliappa clan of Sona Group go back to their roots - SONA College of Technology

The Sona Group Completes 100 Years

Chocko Valliappa on LinkedIn: A century in Chettinad – Valliappa

History The Sona Group

The Sona Group Completes 100 Years

History The Sona Group

The Sona Group (@the_sona_group) • Instagram photos and videos

The Sona Group

Top Engineering Colleges in Tamil Nadu, India - Sona College of

Top Engineering Colleges in Tamil Nadu, India - Sona College of

The Sona Group (@the_sona_group) • Instagram photos and videos