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Shenzhen Linktin Technology Co., Ltd located in the International Low Carbon City of Longgang District, Shenzhen City. We mainly focus on research and development, as well as the manufacturing of smart devices such as headphones, speakers and many others. We also provides all-in-one OEM/ODM solutions for various world renowned audio clients. For many years, Grandsun has coordinated with Qualcomm to develop smart headphones, speakers and VR/AR based on Qualcomm QCC30XX, QCC51XX, CSR86XX, Wifi and 4G/5G, etc. In addition, Grandsun has gained the certifications for Google Bisto, Fast Pair and GVA, Amazon Alexa, Tencent and Baidu cloud-based intelligent information platforms. Grandsun has the capability of providing clients with intelligent audio, smart headphones and speakers throughout the acoustic and audio industry.

1. who are we?
We are based in Guangdong, China, start from 2021,sell to North America(30.00%),South America(20.00%),Eastern Europe(10.00%),Southeast Asia(10.00%),Africa(10.00%),Oceania(10.00%),Eastern Asia(5.00%),South Asia(3.00%),Western Europe(2.00%). There are total about 51-100 people in our office.

2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;