Keystone Electronics was established in 1981 to design and manufacture products finished under the Keystone brand name together with high quality off-shore OEM /ODM manufacturing of radio frequency products, security systems, portable testing instruments, MP3 and computer accessories.  

Keystone Head Office is in Hong Kong, and the factory in Shenzhen Special Economic Zone is 15 minutes drive from the border.  We also have joint ventures with laboratories in China for product development.

Keystone's core technology is in low-power high radio frequency product design and manufacturing.  For certifications, all products meet the requirements of CE & R&TTE in Europe, FCC in USA, DOC in Canada and Australia.  The factory has obtained ISO9001:2000 approval and passed inspection by TUV, CSA, UL and China authority.

Keystone European Sales Office and Warehouse was established in the United Kingdom in 1989 to provide real time support to European customers.

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