At Key Systems, Inc., we pride ourselves on the ability and creativity of our custom engineering department. Let us help you design the product that is tailored to your specific needs. Whether you would like to alter one ......At Key Systems, Inc., we pride ourselves on the ability and creativity of our custom engineering department. Let us help you design the product that is tailored to your specific needs. Whether you would like to alter one of our existing products or work with us to design something completely new, we are here to help