Coretec Group Inc (CRTG)

[Clonefan]

CSPACE® TECHNICAL DEVELOPMENT UPDATE

As you may know from my previous letters, our technical focus is and has been on the completion of our final laboratory prototype, Lab Proto 3. Most of the engineering work (optics,
electronics, and software) for Lab Proto 3 has already been completed. Lab Proto 3 is already 80 times brighter than Lab Proto 2 and 2,000 times brighter than Lab Proto 1. In recent months, the majority of our technical effort has been on identifying organizations that can provide us with the
materials we need for the Lab Proto 3 image chamber and the evaluation of those materials. To date, we have evaluated over 20 different materials from six different organizations worldwide.
As you know from my previous letters, we are evaluating both rare earth-doped glasses and phosphors that could be integrated into polymers (plastics) as candidates for the CSpace® image
chamber. In addition to the one promising glass that we have previously identified, we have just received samples from a second large optical glass company that may provide even better
performance and scalability. In the event that we cannot identify existing materials that meet all of our requirements, the organizations we are working with have the capabilities to develop new materials optimized for use as the image chamber for CSpace®.