KBEAR/魁宝
Producers/Manufacturers:

Shenzhen Lingyin Technology Co., Ltd./  深圳市铃音科技有限公司

Official Websites/Webstores:

http://www.kb-ear.com/

https://shop628a08494m9r6.1688.com/

https://www.aliexpress.com/store/5017064

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