cctv microphone

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[CN] shenzhen yianda electronics co ltd [Manufacturer]
Key Products/Services:
Business Overview: Shenzhen Yianda Electronic Co., LTD, officially established in 2006, is a Security company which specializes in R&D, producing and selling audio products, e...

[CN] Guangzhou Sizheng Technology Electronic Co.,Ltd. [Manufacturer]
Key Products/Services:
Business Overview: Guangzhou Sizheng Technology Co.,LTD., founded in 2010, and be the audio frequency solution provider of Chinese industry-leading at present, selling differe...