siamesed back pack of the piano new
J.SDER Piano Co., Ltd. [China]
backrack researched and developed by ourself .mulitilayer compressive stress raise the stability of the music intonation level.
siamesed back pack of the piano new
backrack researched and developed by ourself .mulitilayer compressive stress raise the stability of the music intonation level.
siamesed back pack of the piano new