My journey at Zalmhuys Group: Directing telephone sales and hypergrowth
The Zalmhuys Group is one of the finest examples of how strategic sales training can contribute to explosive business growth. I've now been asked back five times to train their teams. Since our first collaboration, the organization has grown from approximately 50 to over 300 employees. As a long-term partner, I'm supporting the Zalmhuys Group in their rapid expansion, focusing on perfecting their telesales strategy .
In the dynamic world of international fish wholesale, the real work often takes place on the phone. Using my 12 techniques, I taught the teams how to take control of every call. We trained in overcoming resistance, recognizing buying signals remotely, and using the 11 scientific topics to immediately gain the trust factor. This targeted sales training transformed the employees from order takers into proactive advisors who work the market with authority and speed.
30+ Years
Expertise in sales psychology and results-oriented methodology.
2.000+
Sales professionals trained to a measurably higher level.
400+
Helping organizations achieve structural revenue growth and returns.
5.0 ★ + 9,2 ★
Winner: Best sales trainer in the Netherlands (Google & Springest reviews).
References
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Sales Insights
Best Training Provider
On Thursday, February 19th, 2026, Graham Hulsebos was officially named the Best Training Provider in the Netherlands for Sales. This prestigious award was won by achieving the highest average student rating on the independent platforms Archipel and S...
Read: Best Training Provider
Sales Insights
Graham, how come Google ranks you number 1 as the best sales trainer?
Google's Number 1 Guest on The Sales Podcast
Cesar van der Linden opened the conversation right away: "Graham, why does Google rank you number 1 for consultative selling?"
The answer is control within the sales cycle. True sales power lies in askin...
Sales Insights
Graham Hulsebos officially nominated for 'Best Trainer in the Netherlands 2025'
Graham Hulsebos Sales Training has received a prestigious nomination for Best Trainer in the Netherlands 2025. This national recognition by Springest and Archipel Academy underscores the impact of Graham's unique sales philosophy: "Selling is Asking,...
Read: Graham Hulsebos officially nominated for 'Best Trainer in the Netherlands 2025'
Sales Insights
Why 90% of Salespeople Don’t Use Sales Techniques (And How It Hurts Revenue)
Most salespeople across virtually every industry fail to use professional sales techniques. This article explains why 90% of all sellers rely on guesswork rather than structured sales methods, what this costs businesses in lost revenue, and how moder...
Read: Why 90% of Salespeople Don’t Use Sales Techniques (And How It Hurts Revenue)
Sales Insights
AI in Sales: How AI Literacy Makes Your Sales Team More Productive
Sales is changing rapidly. Discover how AI literacy can help your sales team work smarter, faster, and more customer-focused – from CRM updates to client meetings.
Read: AI in Sales: How AI Literacy Makes Your Sales Team More Productive