• Flying hardware patent
  • Patent for C-MARK NET6000D network digital amplifier
  • Patent for C-MARK K series network loudspeaker
  • Patent for C-MARK combinable mini digital amplifier
  • 专利:一种同轴场声器实用新型专利
  • C-MARK专利:多通道数字功放机实用新型专利

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