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Topstrong was founded in 2001 in china. by designing and manufacturing. had Certification ISO9001£¬CE ,FCC authentication.We are professional Manufacture and sale of products such as mono and stereo Bluetooth headsets Bluetooth hands-free car kit Bluetooth stereo speakers Bluetooth modules Bluetooth sunglasses Bluetooth GPS receiver Bluetooth audio dongle. We have rich experience for ODM and OEM. Our engineering staff can provide timely expert consulting and tuning services in acoustics and product design. ...
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