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 goes through the exact configuration protocol I built: firmware updated, dual-pool configured, hashrate tuned to spec, verified 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
- HQ & Local Service Centre: 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.