Registered Business
Content Ashfield Mining Review Co., Ltd.
Established 2019 in Daegu, South Korea.
We began as a two-person bench operation in a converted warehouse near Dong-gu, testing used ASIC units that local buyers brought in before committing to bulk purchases. What started as informal advice among mining meetup attendees became a formal evaluation service after several operators lost significant capital on misrepresented hardware batches in 2018.
What We Do
We evaluate cryptocurrency mining hardware — specifically ASIC miners rated at 0.05 TH/s and above — with a focus on the tension every buyer faces: lower upfront cost often means shorter useful life, higher repair frequency, or worse power efficiency. Our reports give operators the measured data to decide whether a cheaper unit actually saves money over a 12- or 24-month horizon.
We do not sell hardware, accept commissions from manufacturers, or operate mining pools. Our revenue comes solely from evaluation fees.
Our Bench
Our Daegu facility maintains climate-controlled test racks, PDU-level power metering, and a reference library of hashboard thermal profiles for major Antminer, Whatsminer, and Avalon models sold in the Korean market. We log every test run and retain anonymized degradation curves that inform our longevity projections.
Team
Jae-hoon Park — Lead evaluator. Former electrical engineer at a semiconductor testing firm. Handles bench protocols and hashboard diagnostics.
Eun-ji Choi — Operations and client liaison. Manages scheduling, on-site visits, and report delivery. Previously coordinated logistics for industrial equipment imports.
Dae-won Kim — Parts and repair research. Tracks spare component availability across Korean distributors and grey-market channels, feeding repair cost projections into every report.
Working With Clients
We treat every evaluation as confidential. Your seller, pricing, and facility details are never shared with other clients or published. Reports are delivered as PDF documents with a review call included — we explain our findings in plain language, including the cases where we recommend walking away from a deal.
Community
We attend the quarterly Korea Blockchain Week mining track and host an informal hardware inspection workshop at our Daegu office twice a year. Contact us if you would like to attend the next session.