The organic powersupply circuit is located under the piezo film speaker to reduce surface area.
为减少表面积有机电源电路位于压电薄膜扬声器下面。
Jiangnan acoustic factory was established in 1988 . it is a joint stock company which develops produce and manages buzzer ( magnet buzzer & piezo buzzer ) , mylar speaker and transducer etc.
武进市江南讯响器厂成立于1988年，是一家专业开发。生产。销售蜂鸣器（电磁式&压电式） ，薄型喇叭和驻极体传声器等股份制企业。
Top provider of full range acoustic components: Piezo sounder, Magnetic sounder, Speaker and Microphone/Receiver.
全线声学器件供应商，产品包括：压电发声器，磁性发声器，扬声器及麦克风/听筒。
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