With your diploma, post-diploma in tool and die design, and 29 years of rich industry experience as a senior manager, you're in a strong position to pursue further education. IGNOU does offer an MBA program ideal for working professionals. However, the basic eligibility typically requires a bachelor’s degree. In some cases, IGNOU may consider equivalent qualifications or experience through special provisions. It’s best to confirm with the nearest IGNOU regional center. They can guide you on eligibility and how to apply.