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Sure Joy Technology Industrial Co., Ltd. ( ab. SJT ) was founded in August 2002. It is a Hong Kong registered company, with a team of 

expertise to provide a wide range of security & protection facility products and services, while creating sustainable value for our

customer and end-user. 


2003~2005,as the business was developed rapidly, in April 2005, SJT has invested to establish a manufactory to make ODM electronic

items in mainland China.


SJT is not only a professional facility vendor on Smart Card lock series (including smart card lock integration solution for 1-card

system, hotel RF Temic lock, RF mifare1 card lock, lock for locker, password lock & fingerprint lock for home and office), but also

providing original equipment manufacturers (OEM) and original design manufacturers (ODM) service. SJT invests also a lot in R&D and

launches quite a lot new products each year. It’s worthy mentioning that all lock software is designed by SJT itself to make it

become a one-stop solution provider available.

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