Singapore Head Office: Univonna Pte Ltd 10, Admiralty Street, 02-86, Northlink Building, Singapore 757695 Tel: (65) 6853 5333 Fax: (65) 6753 6291   WELCOME to Our Website! Univonna was founded over 13 years ago and is now one of Singapore’s major suppliers for quality leather sofas focusing on produce and deliver sofas with the best in quality, comfort and design.