1. The accordion body is made of environmentally friendly non-toxic ABS material. It has heat insulation, good toughness, good cushioning characteristics, low temperature resistance, high temperature resistance, and prolongs the service life of the piano. 2. The harmonica gong is made of phosphor bronze, which is resistant to corrosion, aging, and shedding. It is beautiful when played, and the bass of high school is stable and natural.
