Use this "Are you Hydrated?" Urine Color Chart to assess if you are drinking enough fluids to stay hydrated throughout the day. Help avoid the side effects of dehydration with this handy sign. Available in multiple sizes and materials. NMC offers identification solutions geared towards the workplace, primary and secondary schools, and universities. Since the day National Marker Company opened in 1934, we have honored our timeless traditions of safety and quality. Over 81 years later, the NMC team strives to accomplish the same two goals, by manufacturing the highest-quality safety identification products, and helping make the world a little bit safer. We started off in Pawtucket, RI as a fire warning sign screen printer, manufacturing extinguisher labels to specialized printing for retail stores in the 80s. As time went on, workplace safety awareness heightened, and in turn, our line of safety identification products grew. To accommodate our significant growth, in 1999 NMC moved to a larger location in North Smithfield, RI.