Entrance to Technology Plaza is on Pak Tin Par Street, near the rear side of The Mills (南豐紗廠). If normal building access is closed (i.e. after normal business hours or on public holidays), access can be made via the building car park entry on Pak Tin Par Street.
Kindly note that for Sunday and Public Holiday access, the security guard may require leaving your name for access.
From Tsuen Wan MTR Station
From Tsuen Wan West MTR Station