About Us

Welcome to SJT

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.

Our main products include: RF Smart Card Lock, Hotel Lock, Fingerprint Lock, Password Lock, Bluetooth Lock, and related access control systems.

We are committed to providing high-quality, secure, and innovative lock solutions for hotels, apartments, offices, and residential applications worldwide.

Our Vision

To be the leading provider of smart lock solutions, delivering security and convenience to every door.

Quality Certification

SJT has passed quality management system of ISO9001:2015 in April 2017.