Dei International

Dei International company information, Employees & Contact Information

Updated June 2026

Quick answer

Dei International is a Professional Training and Coaching company and founded in 1979. Contact data was last refreshed in June 2026. Find Dei International's verified employee emails, phone numbers, headquarters address, and key decision makers below.

DEI International (formerly the DEI Management Grpup founded by Stephan Schiffman in 1979 in NY) has the most effective sales process system in the world. We've trained 500,000 salespeople in over 9,000 companies which means that what we do is practical and proven. Myself and two colleagues bought the company because we know that our system - tested over 30 years - simply works. I invite you to consider taking a license to sell and train the DEI sales system. It's a low cost, high profit, fast setup opportunity and ideal for people who want to be in the sales world, who can sell and want to own and run their own business. If you are a sales VP or in career transition or already in sales training and/or business consulting, we would like to hear from you. (212) 581 7390 or ceo@dei-sales.com

Company Details

Founded
1979
Industry
Professional Training And Coaching
NAICS
Business Schools and Computer and Management Training
Computer Training
Professional and Management Development Training
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