welcome~Shenzhen CITECH Technology Co., Ltd.
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≥25dB，100 to 200Hz；
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Sunny Lee
Mob(WeChat) : 180 3817 0771
QQ:710061818,
E-Mail：info@szcitech.com
Address: 14 floor, BTR new energy building, Guangyuan 4th Road, Fenghuang Street, Guangming District of Shenzhen,China.