D’Addario is the biggest string manufacturer in the world. The company with headquarters located in Farmingdale , Long Islan, New York, also design and manufacture a collection of accessories related to the music industry. Without any doubt, they are the greatest reference in the guitar strings industry. D’Addario offer us a big variety and its strings are considered of highest quality in the market . Their products are marketed in the United States via 20 wholesale distributors and about 5400 music shops. The company exports their products through 120 distributors in more than 100 countries.