Contact
Book a cold wallet maintenance session or ask a custody question — reach System Maple Line at our Yongin office by form, phone, or email.
Reach us directly
Office
Office 11, 69 Sample-gil, Giheung-gu, Yongin 00000
Phone
+82 31 0000 8740
We respond to session inquiries within two business days. Urgent custody matters are triaged same-day when possible.
Message received
Thank you for reaching out. We will review your inquiry and respond within two business days with available session slots.