Genesis is the land of the free and the home of the tennis string to the topring and manufacturing products manufacturer in Germany, there is no research and development department, which is produced in Germany and Taiwan precede with K Gold. This Black Magic and has the highest grade polymer as you are able to add your ingredients, and special additives Poly String has nylon to achieve the softness of the Bardo, and durability yet allows for higher control of your living space. String Forum are 79% satisfaction and answer on the net in the tester.