ADC stands for the American Diagnostic Corporation. ADC is one of the world's premier manufacturers of accessories and personal instruments for the medical industry. ADC's products are sometimes marketed under a plethora of names, but in the end you can be sure that you are receiving a high quality product from a company with over 25 years of experience! Whether you are looking for a stethoscope, a nylon medical bag, or penlights, ADC manufactures high quality products that will help you successfully complete your job tasks!