Contact Us
Contact Information
Your Hardware Gatekeeper in Asia. We don't just ship boxes; we engineer reliability. Being based in Hong Kong places us right at the heart of the world's crypto hardware supply chain. Every unit is intercepted, unboxed, and verified to my exact configuration protocol before shipping — so you receive a flawless, plug-and-play machine.
If you have any questions about our hardware, technical support, or your order, please do not hesitate to contact our professional support team.
- Company Name: CALVIN RIG TECHNOLOGY (Registered in Hong Kong)
- Business Registration Number: 41625564-000-04-26-5
- QA Headquarters: Yuen Long, Hong Kong — The Hardware Hub of Asia. (Every unit is configured and verified to my exact protocol before shipping — firmware, pools, and hashrate all checked. We filter out the lemons so you don't have to.)
- Customer Support Email: support@calvinrig.com
- Global WhatsApp Support: +852 9538 7305 (Recommended for International & Tech Support - Text/Voice Messages Only)
- HK Local Office Line: +852 5976 8726 (For Hong Kong local inquiries)
- Support Hours: Monday - Friday: 10:00 AM - 6:00 PM (HKT / GMT+8). We usually respond to all inquiries within 24 hours.