- Today, as we look back over the accomplishments of nearly 100 years in business, we reflect on many of those great Mueller moments in history and take pride in our heritage. We are proud to be key suppliers to the automotive, electronic, electrical, telecom and specialty markets and look forward to continuous growth in these dynamic sectors and other industries. Today, still privately held and controlled by a descendent of the original founder, Mueller continues to focus on development and quality. We are well prepared to meet industry's changing needs in the decades ahead.