For professional guitarists and daily practice, adopting specifications with a mix of thick and thin strings ranging from 012 to 053, featuring a core made of hexagonal carbon steel imported from the United States, combined with an innovative ratio of internal and external string diameters, without sacrificing low-end feel, enhancing string tension and clarity of tone. Simultaneously, in the coating technology, achieving a more balanced appearance in timbre, playing comfort, and longevity of strings.