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 miner is intercepted, physically unboxed, and stress-tested at our facility to ensure 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
- Global QA & Testing Facility: Yuen Long, Hong Kong — The Hardware Hub of Asia. (Every single unit is physically unboxed, tuned, and stress-tested by our technical team here before crossing the ocean to your door. 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.