Nihon Piano Holding Co.Ltd. 1-3-10 Tonya-Cho-nishi 370-0007 Takasaki City, Gunma Japan Piano Prep Co., Ltd. KHO Building 1F, 3-14-16 Higashi, Shibuya-ku Tokyo Japan Nagoya Piano Choritsu Center Ltd. 4-2109 Hirabari Tenpaku-ku Nagoya-shi Aichi 468-0011 Hamamatsu Piano Industry Co.Ltd. 1-10-27 Shimpuku Minamiku Okayama Japan
