As the President and Chief Executive Officer of Guntert & Zimmerman (G&Z), it is my pleasure to welcome you to our webpage. Within these pages you will come across the profound and passionate story of a family owned manufacturing business which is backed by a strong organizational morale, ethics and tradition.

The 77 years of our history and tradition have been built on distinctive innovations and achievements in the concrete paving industry. G&Z is proud to be a pioneer and innovator in delivering new equipment solutions that have considerably impacted civil engineering contractor’s productivity for decades.

Our mission is to design equipment for excellent function, ease of maintenance and long life. We aim to continuously contribute to the sustainable road infrastructure system that supports domestic and global society’s quality of life and road safety.  As a leader in designing and perfecting new concrete paving equipment ideas, G&Z proudly delivers value to its customers.

The paving industry evolves and yet one thing remains unchanged: G&Z’s commitment to be a reliable partner. We take a great satisfaction in the quality of our products and the knowledge of our highly skilled and customer-oriented engineering, manufacturing, service and sales personnel.
Every year we take on new challenges and make a focused effort at G&Z to pursue innovations that break the status-quo and address the diverse need of the global concrete paving industry. We take great pleasure in meeting and exceeding the needs and expectations of our customers. We welcome and appreciate the opportunity to demonstrate our capabilities and extend our services to you.

Ronald M. Guntert, Jr.

President & CEO


The quality of any organization is expressed through the morale and quality of its leadership. For 77 years, Guntert & Zimmerman has benefited from strong, decisive leaders. Currently led by Ronald M. Guntert Jr., President and CEO, G&Z is committed to its core values and highest standards.

Our leadership team leads by example guiding our employees in the way they do their jobs and the way we treat our customers and each other.

Ronald M. Guntert, Jr.

President & CEO

Jan Scholl



G&Z is committed to its people, its most valuable asset. We believe that each of us needs a sense of belonging, joy and satisfaction in what we do while holding unquestionable accountability, integrity and loyalty. To be effective in exceeding our customer’s expectations, every G&Z team member is part of a synchronized work environment that is challenging, rewarding and inspiring.

Qualities like teamwork, cooperation, mutual respect, hard work, determination, knowledge and continuous training, trust and communication, safety provide ample opportunities for professional development and personal growth for every G&Z team member.


Every day we at G&Z work hard to carry our founder’s business principles and core values. High quality, excellence, performance, continuous improvement and innovation are not optional but mandatory ideals we constantly move towards to. These values are in every product designed, engineered, built, and delivered to the end users. Our core values define, unite and differentiate us from others in the industry.

High Quality – We provide outstanding, easy to use but at the same time complex equipment and unsurpassed service which together deliver value to all G&Z stakeholders (customers, management, employees and society). We never make decisions that compromise our level of service or product quality, safety, reliability and productivity;


Excellence – We are committed to excellence in everything we do to meet the needs of our customers and exceed their expectations. We execute with diligence, expediency in a friendly and professional manner. We treat our customers the way we expect to be treated by those who provide services to us;


Performance – exceptional, result based performance is the value we obtained by choice. We succeed together by taking exceptional care of our customers while following clearly defined output performances of our company;


Continuous improvement - is an ongoing effort we make to improve our products, services, and processes. At G&Z customer valued processes are evaluated and improved constantly in the light of efficiency, effectiveness and flexibility. Being customer oriented, listening to customers’ needs and challenges make G&Z a contractor inspired innovative manufacturer;


Innovation – for us innovation is designing, engineering and manufacturing breakthrough machines. However, it is not only about the economic value we create for our customers, it is also about capability, inclusivity, possibility, opportunity, sustainability and responsibility we have to our customers.