目前市场上出售的国产口风琴，25键的约120元1只，32键的约160元1只，37键的约180元1只；进口乐器的单价均在300元以上。为推动口风琴进课堂，黑龙江绥滨普阳东北乐器厂（口琴厂）开发出价廉物美的“长城牌”系列口风琴。其中：8键口风琴，批发价10元左右。13键口风琴，批... At present, the domestically produced mouthpiece piano on the market is about 120 yuan for 25 keys, 1 for about 160 yuan for 32 keys, and 1 for 180 yen for 37 keys; the unit price of imported musical instruments is more than 300 yuan. In order to promote the piano into the classroom, Heilongjiang Puyang Northeast Northeast Musical Instrument Factory (Harmonica Factory) has developed the “Great Wall” series piano with a low price. Among them: 8-key tone organ, the wholesale price is about 10 yuan. 13 key tone organ, batch...