发明授权
US08406452B2 Diaphragm for speaker, speaker using the diaphragm, and system using the speaker 有权
扬声器隔膜,扬声器使用隔膜,系统使用扬声器

Diaphragm for speaker, speaker using the diaphragm, and system using the speaker
摘要:
A loudspeaker diaphragm contains polylactic acid, and bamboo charcoal mixed in the polylactic acid. The diaphragm does not affect environment and provides a loudspeaker with high sound quality.
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