The SIM Group of companies proudly represent the residual corporate entities and assets of the late Dr. Daniel McDonald, his estate and trusts.

It is incumbent upon us to preserve our rich heritage, protect our assets and resources and ensure the integrity of our companies for generations to come. It is further our purpose to perpetuate Dr. McDonald’s legacy and the fundamental principles on which our corporate philosophy is based.

The SIM Group shall serve as a leader in our community and respective industries where excellence is our only standard. Through the prudent utilization of our precious assets, we shall create a diversified composition of corporate entities for the purpose of generating financial benefits to achieve our corporate goals and objectives as well as fulfill our philanthropic endeavors.

The common thread woven through each of our companies is our commitment to excellence. It is further our inherent belief that there is no place for mediocrity, and it is essential that we provide the finest in quality goods and services. Customer service shall always receive ultimate consideration and be the highest of priorities. We believe that success is a natural by-product of being the very best at what we do.

It is in keeping with our corporate philosophy, sound principles and basic beliefs that we will achieve true “enrichment of life and community” for which we are dedicated.

Byrnes School


The SIM Group supports a variety of children’s health, advocacy and literacy programs, each year providing critical medical care, academic programs and scholarships.

Website hosted by Brainstorm Web Design - Charleston, SC