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🌿 Refurbished Technology for a Sustainable Future — Certified & Tested IT Equipment for Your Business
About Us | Closed Group S.R.O.
ABOUT CLOSED GROUP S.R.O.

Pioneering Sustainable Technology Through Certified Refurbishment

Technology can be used to our advantage, or it can take advantage of our budgets and natural resources. We refuse to be part of the latter category. Our mission is deeply rooted in recycling, reusing, and giving every high-tech product a durable second life.

3+
Years Of Dedicated Mission
2,000+
Monthly Renewed Devices
100%
Grade-A Quality Certified
EU-Wide
Partner & Workshop Network
OUR PHILOSOPHY

Long-Lasting Refurbished Products Built To Protect Budgets And The Planet

We see the future, and it is bright, it is sustainable, and it is focused on premium high-tech products.

Our CGroup team makes sure to merge ecological responsibility with the rigorous technical attributes of the everyday devices your business relies on. Refurbishing has become one of the most critical ways to contribute to society, and we have made it our daily mission to save as many high-tech devices as possible from becoming premature waste.

Extending the life of a product is something we engineer every single day. We operate a state-of-the-art facility capable of processing a significant volume of consumer and enterprise electronics, turning pre-owned tech into reliable, certified workplace assets.

Rigorous Multi-Point Quality Diagnostics
Certified Component-Level Refurbishment
Explore Our Expertise
The Widest Range Of Refurbished Products - Closed Group
OUR CORE CAPABILITIES

The 6 Pillars Of CGroup Engineering

We bridge the gap between consumer electronics and high-performance business equipment with precision, transparency, and European compliance.

Automated Diagnostics

Proprietary software suites audit CPU throttles, motherboard integrity, graphic engines, RAM stress thresholds, and charging circuitry under realistic thermal loads.

Component-Level Repair

Our certified technicians perform micro-soldering, IC chip replacement, flex-cable renewals, and OEM-standard battery replacements directly within our workshop facilities.

Certified Data Sanitization

Military-grade data eradication conforming to NIST 800-88 Revision 1 guidelines, ensuring irreversible overwriting with tamper-proof certification per serial number.

Transparent Grade-A Standard

Strict cosmetic evaluation protocols. We reject cosmetic compromises, ensuring screens are scratch-free, chassis surfaces are immaculate, and batteries test above 85% capacity.

Reverse Supply Chain

Coordinated pick-up and distribution across Europe via insured transit partners, custom secure batch packaging, and real-time inventory manifest tracking.

24/7 SLA Engineering

Dedicated after-sales support managed inside our technical facility, ensuring 24-hour response SLAs, express device swaps, and on-site support capabilities.

PREMIUM DEVICE SPECIALIZATION

The Widest Range Of Enterprise & Consumer Tech

We at CGroup offer a complete portfolio of high-grade refurbished devices across Apple, Dell, Lenovo, and HP. Our sourcing networks span corporate trade-ins, certified collectors, and retail buybacks across the EU.

Apple MacBook Pro & Air

M-Series & Intel Silicon

Retina display certified, pristine keyboards, thermal paste renewed, and macOS pre-loaded.

iPhones & Smartphones

Grade-A OLED Display

TrueTone programmed, Face ID verified, waterproof seals re-applied, and unlocked worldwide.

iPads & Tablets

Liquid Retina Touch

Digitizer precision tested, Apple Pencil compatibility checked, clean aluminum anodization.

Monitors & Workstations

UltraSharp & 4K Displays

Zero dead-pixel policy, uniform LED backlights, and ergonomic stands sanitized.

Explore Buyback & Resale
Refurbished Apple devices - ClosedGroup
A COMPLETE LIFECYCLE

Our Streamlined 4-Step European Ecosystem

We made a promise to build an entire end-to-end infrastructure. Working alongside accredited logistics partners, collectors, and workshops across Europe, we have streamlined every phase of the refurbishment procedure.

01

Logistics & Collection

The collection phase operates via an optimized logistics workflow activated through our trusted partners, retail trade-ins, and secure commercial channels.

02

Testing & Diagnostics

Every device undergoes extensive diagnostic inspections to confirm hardware viability, battery efficiency, screen clarity, and processing performance.

Our European Partner Network - Closed Group
Active Network Across The European Union
03

Repair & Refurbishment

We target the root of any functional defect. Specialized technicians renew batteries, replace worn parts with certified units, and meticulously restore chassis finishes.

04

After-Sales & Warranty

Quality is guaranteed post-delivery. Direct workshop support, rapid replacement programs, and flexible warranties ensure long-term peace of mind.

The Closed Group Professional Team

"Humans and high-tech engineering working together for a sustainable tomorrow."

PEOPLE BEHIND OUR SUCCESS

A Forward-Thinking Team Of Tech Innovators

The employees of CGroup define the success and reliability of our enterprise. We believe that each team member makes a measurable difference, and that is reflected across our client partnerships and certified product standards.

At CGroup, we make sure that our team is genuinely listened to, trusted, and empowered. By investing heavily in technical training modules and professional certifications, our engineers bring cutting-edge knowledge into every device we renew.

Continuous Knowledge & Training

Ongoing specialized hardware and diagnostic courses keeping our technicians at the peak of industry advancements.

Shared Responsibility & Vision

A collective corporate culture united by the belief that high-tech and sustainability belong together.

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Ready To Transform Your IT Sourcing With CGroup?

Partner with an experienced European refurbisher committed to sustainable electronics, transparent grading, and responsive customer service.

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