The leader of bluetooth headphones in China

Is there instruction manual for ANC headphones?
Shenzhen Royaltenic Industrial Limited has got directions prepared to satisfy your requirements, saving time and providing the reassurance. The proper operation will affect the functioning efficiency and lifespan of ANC headphones.
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Since the establishment of brand ROYAL TANIC, Royaltenic enjoy higher reputation and its anc bluetooth headphones is warmly welcomed. Royaltenic focuses on providing a variety of tws earphones for customers. It is of great commercial value. It can be used for covering huge open spaces with minimal intervention and minimal construction time. The product is compact, light, and comfortable. Test machine is also necessary in Royaltenic to guarantee the quality of anc bluetooth headphones before package. It is marketed with the brand namely our company.
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our company supports customized service for the production line. Ask!

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