阿波罗98型钢琴电子校音器，钢琴使用特别方便。经国家轻工乐器检测中心检测合格。
我厂位于北京中关村科技园区丰台园，西四环南路科丰桥北侧。主要产品有阿波罗系列钢琴、32键、37键口风琴、单音、重音、回声、半音阶等系列口琴、六孔、八孔系列竖笛、高级钢琴调修工具、电子校音器、节拍器等。
　Beijing Huanyun Apollo Ars Co.,Ltd. is situated at the Fengtaiyuan of Zhongguancun Science and Technology Park, north side of Kefeng Bridge, Xisihuanan Road. The main products include: Apollo piano 32-key and 37-key melodica the series of single-tone, multiple-tone, echo, and chromatic scale mouth organs, the series of 6-hole and 8-hole recorders, high-quality tools for piano adjustment and repairs, electronic calibrators, metronomes, etc. The center offers training course for music teaching and frequently holds activities of competitions in performance of playing musical instruments all the year round. In 2002 the center ever sponsored the first national competition of performance in playing melodica and has achieved great success.