Bitmain
Bitmain Antminer S21 XP+ Hyd (500Th/s)
SHA-256 • Bitcoin (BTC)
500 TH/s
5500 W
11j/Th
Physical delivery Hosting available Worldwide batch ships November 13, 2026
$4,200
CERTIFIED PRE-OWNED ASIC HARDWARE · BACKED BY XI’AN TENGCHENG
New and Used ASIC Global Miners, Tested and Ready for Delivery
Used ASIC Global supplies new and Used ASIC Global miners from Shenzhen to customers worldwide. We inspect used equipment, handle repairs in-house, and provide hosting for eligible miners.
ESTABLISHED
2007
17+ Years Industrial IT & Telecom Infrastructure
CAPITAL
30,000,000 RMB
Registered Corporate Capital (Xi’an Tengcheng Co., Ltd.)
CREDIT CODE
USCC 916101137974913521
Shaanxi High-Tech & Technology SME Designation
STANDARDS
ISO 9001:2015
Certified Quality Management & 48h Stress QualificationMost Profitable Miners
Real-time profitability rankings calculated against live coin difficulty and power efficiency metrics.
Bitmain
Bitmain Antminer X9 (1Mh/s)
RandomX • Monero (XMR)
1000 KH/s
2472 W
2.472j/kh
Physical delivery Hosting available Worldwide batch ships November 13, 2026
$2,300
SealMiner
Bitdeer SealMiner DL1 Air (25Gh/s)
Scrypt • Dogecoin + Litecoin (DOGE+LTC)
25 GH/s
3725 W
0.149j/Mh
Physical delivery Hosting available Worldwide batch ships November 13, 2026
$3,200
MicroBT WhatsMiner
MicroBT WhatsMiner M79S (1.35Ph/s)
SHA-256 • Bitcoin (BTC)
1350 TH/s
20000 W
14.815j/Th
Physical delivery Hosting available Worldwide batch ships November 13, 2026
$2,400
Active Bench Qualification Bay
Xi’an High-Tech Zone · 48-Hour Full-Load Thermal Burn-In & Voltage Domain Diagnostics
Buying Used Should Not Mean Buying Blind
The primary hazard in the secondary ASIC market is concealed repair work. We eliminate the guesswork with component-level diagnostic records, verified board thermals, and transparent equipment grading.
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Trace & Voltage Diagnostics: Digital oscilloscopes verify power plane, LDO regulators, and buck converters before listing.
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Full Diagnostic Disclosure: Every replaced ASIC chip, repaired power unit, or re-seated heatsink is itemized on the unit page.
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48-Hour Full-Load Burn-In: Continuous stress testing under sustained 100% computational load in climate-controlled test bays.
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Direct 365-Day Service Warranty: RMA and parts support backed directly by our Xi’an engineering laboratory.
EQUIPMENT CLASSIFICATION
Three Transparent Equipment Tiers
TIER 01
Grade A+ · Factory-New
Factory-sealed machines sourced directly through primary commercial channels. Retains official factory warranty and zero prior operating hours.
TIER 02
Grade A · Certified Refurbished
Operational hardware serviced in our Xi’an laboratory. Fresh thermal compound, replaced chips, 48-hour burn-in, full diagnostic disclosure, and 365-day warranty.
TIER 03
Grade B · Tested Farm Workhorses
Intact, fully operational farm pulls with minor cosmetic chassis wear. Verified for nominal hashrate and stable board temperatures at lowest capital cost.
6-Stage Diagnostic & Refurbishment Protocol
Every pre-owned unit entering our Xi’an facility moves through a standardized six-stage qualification sequence before receiving international export release.
STAGE 01
Optical Inspection & Ultrasonic Bath
High-pressure dry air decontamination followed by ultrasonic chemical immersion to eliminate conductive mining dust and flux residue from hashboards.
STAGE 02
Trace Impedance & Voltage Plane Diagnostics
Digital oscilloscopes test power domains, verifying low-dropout (LDO) regulators, buck converters, level shifters, and EEPROM integrity across each hashing domain.
STAGE 03
Component-Level SMT Micro-Soldering
Faulty ASIC chips are desoldered and replaced using precision BGA reballing stations. Heatsinks are re-seated with industrial-grade phase-change thermal materials.
STAGE 04
Continuous 48-Hour Full-Load Burn-In
Machines run at 100% computational load in climate-controlled bays. Telemetry software logs chip temperature deltas, hardware error rates, and fan tachometers.
STAGE 05
Laser Serialization & Bench Test Report
Every unit receives an individual bench-test report recording wall-plug wattage, actual terahash yield, board serials, and inspection timestamps signed by lead technicians.
STAGE 06
ESD Anti-Static Vacuum Packaging
Units are packed in moisture-barrier ESD foil bags with desiccant, encased in molded high-density EPE foam armor, and boxed in reinforced multi-wall export cartons.
Have Mining Fleets or Decommissioned Units to Sell?
We purchase commercial batches of operational and faulty mining hardware from institutional farms, hosting facilities, and individual operators worldwide. Receive binding valuations within 24 hours based on real-time market spot rates.
Operational & Non-Operational Batches Accepted
Transparent 24-Hour Remote Diagnostic Valuation
Insured International Logistics & Escrow Settlement
Request Fleet Valuation
STAGE 01
Remote Diagnostic Log Submission
For active fleets, our engineers review 24-hour pool telemetry, kernel logs, and serial sheets. For offline hardware, submit batch photos and diagnostic summaries.
STAGE 02
Binding Commercial Quotation
Receive a formal purchase order with agreed unit pricing. Valuations are locked in writing prior to shipment, eliminating unexpected freight-dock renegotiations.
STAGE 03
Secured Freight & Rapid Settlement
We coordinate freight collection, provide insured transport coverage, and execute rapid capital settlement upon physical intake and serial verification at our facility.
Component-Level Repair Services for Third-Party Fleets
Our Xi’an engineering lab accepts ASIC hardware purchased from any supplier or previous operator. We repair hashboards, control boards, and server-grade power supplies across Bitmain Antminer, MicroBT WhatsMiner, Canaan Avalon, and IceRiver lines.
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Hashboard SMT Rework: ASIC chip replacement, EEPROM flashing, level-shifter repair, and trace reconstruction.
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Power Supply Recertification: APW and WhatsMiner PSU load qualification, capacitor overhaul, and fan replacements.
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Itemized Pre-Repair Estimates: Detailed diagnostic summaries provided before any billable repair work begins.
SMT Cleanroom & Micro-Soldering Bay
Xi’an High-Tech Development Zone · Advanced Component Rework
Buy, Sell, Repair or Operate Your Miner
A unified infrastructure partner for equipment procurement, liquidation, workshop repairs, and turnkey colocation.
Buy New Miners
Source factory-sealed models from established mining hardware manufacturers.
Shop new hardwareBuy Used Miners
Certified pre-owned machines with full component-level diagnostic disclosure.
Shop available hardwareSell Your Miners
We purchase working and faulty commercial equipment batches worldwide.
Request fleet valuationASIC Repair
Component-level diagnosis and SMT rework across all supported models.
Request repair quoteHosted Colocation
Direct rack deployment in monitored low-cost data centers with zero customs delays.
Explore hostingCloud Mining
Contracted hashrate allocations with transparent daily settlements.
Explore cloud miningHow an Order Works
Transparent technical disclosure before payment, followed by secured dispatch or turnkey facility hosting.
STEP 01
Choose the Hardware
Compare model, algorithm, hashrate yield, power draw, and active market profitability.
STEP 02
Review the Bench Report
Verify inventory tier, diagnostic logs, included accessories, and published warranty coverage.
STEP 03
Delivery or Colocation
Direct insured worldwide freight or instant rack deployment in China Data Center.
STEP 04
Track and Manage
Monitor order fulfillment, hosted telemetry, or repair status directly from your account.
New and Used Warranty at a Glance
We provide full clarity on warranty underwriting so institutional and retail buyers know exactly how claims are fulfilled.
| Policy Attribute | Factory-New Miners | Certified Used Miners |
|---|---|---|
| Warranty provider | Original manufacturer (Bitmain, MicroBT, etc.) | Used ASIC Global (Direct Engineering Lab) |
| Warranty period | Manufacturer’s published period (typically 180–365 days) | one year (365 days) from dispatch date |
| Qualification condition | Factory sealed, zero prior operating hours | Engineer-inspected, 48h burn-in bench tested |
| Component disclosure | Factory pristine | Documented on individual serial bench report |
| Claim & RMA channel | Manufacturer service protocol | Direct facility technician support |
Common Questions
Direct technical answers to questions institutional operators and individual buyers ask before procuring hardware or requesting repairs.
What is the difference between Grade A+ and Grade A miners?
Grade A+ units are factory-new machines with zero previous operating hours and manufacturer warranties. Grade A units are certified pre-owned machines that have passed our 48-hour burn-in qualification in our Xi’an lab and carry our 365-day service warranty.
How do I verify whether a pre-owned machine was repaired?
We provide full component-level disclosure. The product listing and laser-tracked serial sheet clearly identify whether the unit operated without intervention or required chip replacement, heatsink re-pasting, or power supply overhaul.
Can you repair ASIC miners purchased from other suppliers?
Yes. Our Xi’an component rework laboratory accepts miners bought from any source. We service hashboards, control boards, and power supplies with itemized quotes prior to commencing work.
How does the farm liquidation and buyback process work?
We review 24-hour pool telemetry, kernel logs, and batch photos to generate a binding purchase order within 24 hours. Once agreed, we arrange insured freight and capital escrow settlement upon intake verification.
Can eligible hardware be placed directly into hosting?
Yes. Buyers can deploy hardware directly into our monitored data-center colocation facilities, eliminating international freight transit times and import customs overhead.
Do you provide international shipping and insured freight?
We ship globally using custom multi-wall export cartons with high-density EPE foam armor and ESD moisture-barrier vacuum packaging, with full freight insurance available.
Consult with Our Technical Procurement Team
Whether sourcing high-volume certified miners, arranging fleet liquidation, or requesting custom board repairs, our Xi’an engineering team is available to assist.