Thanks Jack.
Here's an old Stelux sign in the 1970s (possibly atop Stelux House in Kowloon City?), which will have some meaning for vintage Seiko collectors with bracelets made by that company, which also owns Thong Sia, the regional Seiko distributor in Singapore, Malaysia, Brunei, etc. They also operate Seiko service centres.
https://industrialhistoryhk.org/the-...ch-components/