Our design team produces shop drawings from site dimensions, and senior technicians provide on-site guidance for laying, pattern alignment, sealing and grouting acceptance — protecting both schedule and quality.
Describe your site status and the type of support needed. Urgent requests can opt for a 48-hour response — we will assign a dedicated engineer to connect with you as soon as possible.
For urgent requests, reach us directly at +852 5538 0525 — instant reply during working hours.
Add H S S T _ H K and state your business type. We will connect you with the right colleague right away.
General enquiries: stone@hsst.hk
Complaints & compliance: hs@hsst.hk
Mon – Fri 09:00–18:00 (HKT). Every form submission is answered within 1 working day.