Kunshan Plant · Jiangsu  |  Hefei Plant · Anhui, China [email protected]  |  WhatsApp +86 132 6227 6239
C-BOX Electronic Technology Request a Quote

About Us

China's own brand of electronic packaging

C-BOX Electronic Technology Co., Ltd. operates as one team with plants in Kunshan and Hefei — chassis and accessories from Kunshan, cabinets and accessories from Hefei, international sales from our Shanghai office.

Who We Are

Two sister plants, one C-BOX team

C-BOX Kunshan Plant (est. 2016) makes chassis and accessories at a 6,000 m² plant. C-BOX Hefei Plant (Changfeng County, Anhui) makes cabinets and accessories at a 23,000 m² plant built on company-owned land — the state-issued land title covers 13,535 m² of industrial land held to 2071, and both the land and the plant buildings are owned outright, with second and third plant buildings now under construction. A Shanghai office in Huangpu District handles international sales and foreign trade.

  • 100+ employees group-wide — 60+ production staff, 20+ engineers, 10+ QC
  • Kunshan plant est. 2016 · Shanghai international sales office
  • Own land and plant buildings at the Hefei campus — 13,535 m² titled industrial land held to 2071 (title scan below)
  • Products exported to Europe, Korea, India, Southeast Asia and North America
  • Serving power, rail transit, automotive and industrial electronics manufacturers in China
  • OEM / ODM and build-to-print manufacturing
C-BOX factory aerial view

Inside C-BOX

See our products on the production floor

A quick look at C-BOX chassis in our workshop — and a walk through the factory floor.

C-BOX workshop — 19″ subrack assembly and inspection

Factory floor — machining & fabrication

Factory floor — production line

Factory floor — assembly & finishing

Subrack assembly line — real time

Large cabinet — door & interior fit-out

Sheet-metal line — coil decoiler, leveller & CNC punching

Export packing & documentation

Our Facilities

Two plants, one production system

Kunshan (Jiangsu) for chassis and precision parts, Hefei (Anhui) for cabinets and enclosures — laser cutting, punching, bending, welding, machining and powder coating all in-house.

C-BOX Hefei plant building
C-BOX Hefei Plant campus
Aerial view of C-BOX Hefei plant
Hefei plant — 23,000 m², new buildings under construction
C-BOX product showroom
Product showroom
Main production hall panorama
Main production hall
Assembly and fabrication area
Fabrication & assembly area
Fiber laser cutting machine
Fiber laser cutting
Fiber laser cutting stainless steel
Laser cutting — steel & stainless
Laser cutting cell
Laser cutting cell
Dontzer CNC turret punch
CNC turret punch (Dontzer ES-1400)
CNC turret punch press T30
High-speed turret punching
DSM CNC press brake
CNC press brake (DSM HP-8025)
Deratech CNC press brake
CNC press brake (Deratech Technica)
Automated welding robot
Automated welding robot
Press stamping workshop
Press stamping
CNC machining center shop
CNC machining centers
Subrack assembly benches
Subrack assembly benches
Powder coating line
Powder coating line
Powder coating custom colors
Powder coating — custom colors
Material warehouse
Material & WIP warehouse
Finished goods warehouse
Finished goods & export packing

Customer Audits

Customers audit our plants in person

Export customers regularly visit and audit the Kunshan and Hefei plants — quality systems, traceability and production capability, checked on site before and between orders. A few impressions from recent audits (faces of customer personnel blurred for privacy).

Rail-transit customer (South Korea) — subrack & assembly review

Rail-transit customer audit — subrack review at assembly area
Rail-transit customer audit — walking the assembly line
Rail-transit customer audit — inspecting finished subracks
Rail-transit customer audit — chassis inspection
Rail-transit customer audit — discussing subrack details
Rail-transit customer audit — EMC cabinet review
Rail-transit customer audit — production floor tour
Rail-transit customer audit — sample review with engineering

Overseas customer — machining, warehouse & packing

Customer audit — cabinet showroom walkthrough
Customer audit — group photo at the Hefei campus
Customer audit — panel review at assembly
Customer audit — component check at the workbench
Customer audit — warehouse walkthrough
Customer audit — CNC machining center inspection
Customer audit — machine tool review
Customer audit — material storage area
Customer audit — packing area review
Customer audit — WIP racks and kitting
Customer audit — finished cabinet check
Customer audit — group photo outdoors
Customer audit — team photo on campus
Customer audit — showroom and heritage wall
Customer audit — parts review
Customer audit — production line discussion
Customer audit — testing and inspection station
Customer audit — shelving and stock check

Hefei plant — the tour our visitors see

Hefei plant — cabinet storage and staging
Hefei plant — main production hall
Hefei plant — fabrication area
Hefei plant — welding and assembly zone
Hefei plant — sheet-metal staging
Hefei plant — new production building
Hefei plant — machining corner
Hefei plant — export crates ready for shipment
Hefei plant — press punch and stamping shop
Hefei plant — fiber laser cutting hall
Hefei plant — raw sheet storage and staging
Hefei plant — press brake bending area
Hefei plant — CNC machining center shop
Hefei plant — fabrication hall with parts staging

Our People

The team behind C-BOX

Skilled hands and long tenure are the backbone of consistent quality. Many of our people have been with C-BOX for over a decade — production, quality, engineering and support, working as one team across Kunshan and Hefei.

C-BOX production team at the assembly line
Production team at the assembly line
C-BOX weekly review meeting
Weekly review meeting at the plant office
C-BOX annual team-building day
Annual team-building day
The C-BOX team at the Kunshan plant
The team at our Kunshan plant
The C-BOX team at the factory gate
The team at the factory gate

Capabilities

Equipment that guarantees precision

Bolstered by advanced equipment and a dedicated quality-inspection team.

4 × Laser CuttersFiber laser cutting of steel, stainless and aluminum sheet
5 × CNC Turret PunchesHigh-speed punching and forming
10 × Bending MachinesPrecision press-brake bending, 9-fold profiles
23 × Machining CentersCNC milling and machining of chassis parts
Welding & 2 Automated Spray LinesWelding, surface treatment and powder coating
Dedicated Inspection TeamIncoming, in-process and final inspection

Qualifications

Certified quality, verifiable credentials

ISO 9001 QMSCertified at both plants — 2026 certificates, CNAS / IAF accredited
High-Tech EnterpriseC-BOX Hefei Plant accredited — Certificate No. GR202343003343 (2024), scan in Certificates below
Type-Test ReportsEMC, electromagnetic shielding, salt-spray, connection-resistance and vibration tests — full scans in Test Reports below
52 Granted Patents48 utility models, 3 inventions, 1 design patent — all certificate scans published, view the full list
Full TraceabilityMaterial certificates and lot traceability on every project as standard
Registered & VerifiedBusiness licences of both plants verifiable via China's national enterprise credit registry

Corporate Responsibility

Responsible manufacturing, beyond the product

Environment, quality and people — standards we hold ourselves to, whether or not they appear on an invoice.

Environment — closed-loop water useAnodizing and conversion-coating rinse water is pre-treated, then evaporated and reused as feedwater for deionised-water production, so concentrated process effluent is not discharged; remaining process wastewater is treated on site and handed over to the industrial-park treatment plant, meeting China's electronics-industry water discharge standard (GB 39731).
Environment — clean air & wasteBag-filter dust collection, multi-stage alkali scrubbing towers and activated-carbon VOC adsorption on the relevant lines; hazardous waste is stored to standard and transferred only to licensed contractors. Our latest plant upgrade passed the environmental impact assessment review by the Hefei Ecological and Environment Bureau (December 2025).
Quality & customer IPISO 9001:2015 (CNAS / IAF accredited) at both plants, full material traceability on every project, and strict confidentiality for customer drawings and designs — build-to-print work stays build-to-print.
People & community100+ employees group-wide with structured on-the-job training for production and QC teams, and employee care programmes such as festival benefits for every colleague; long-term local investment at our owned Hefei campus — land held to 2071, new plant buildings under construction.

Certificates

Our certificates at a glance

Scanned originals — certificate numbers can be verified with the issuing body.

ISO 9001 certificate — C-BOX Electronic Technology Co., Ltd. (Kunshan Plant)
ISO 9001:2015C-BOX Electronic Technology Co., Ltd. (Kunshan Plant) · Reg. No. 00926Q01972R201 · valid to 2029-06-23
ISO 9001 certificate — C-BOX Electronic Technology Co., Ltd. (Hefei Plant)
ISO 9001:2015C-BOX Electronic Technology Co., Ltd. (Hefei Plant) · Reg. No. 00926Q01972R201-1 · valid to 2029-06-23
Business licence — C-BOX Electronic Technology Co., Ltd. (Hefei Plant)
Business LicenceC-BOX Electronic Technology Co., Ltd. (Hefei Plant) · registered capital RMB 50 million
High-Tech Enterprise certificate — C-BOX Electronic Technology Co., Ltd. (Hefei Plant)
High-Tech EnterpriseC-BOX Electronic Technology Co., Ltd. (Hefei Plant) · Certificate No. GR202343003343 · issued 2024-10-29, valid 3 years
Real estate title certificate — C-BOX Electronic Technology Co., Ltd. (Hefei Plant), 13,534.60 m² state-owned industrial land
Land Title — Hefei PlantC-BOX Electronic Technology Co., Ltd. (Hefei Plant) · 13,534.60 m² state-owned industrial land, individually owned · use right held to 2071-03-25 · certificate scan shown with title number redacted

Type-Test Reports

Independent third-party test reports

Full scans of third-party type-test reports on our chassis and cabinets, issued by accredited testing laboratories (REL Testing, STIEE Shanghai). Report numbers can be verified with the issuing body.

CPCI EMC test report cover — REL Testing Report No. WX240304-012
CPCI EMC Test ReportCPCI electromagnetic-compatibility chassis · REL Testing · Report No. WX240304-012 · 2024-03
Salt spray, shielding effectiveness and connection resistance test report — STIEE Report No. 23BAS01P35D32-00598/1
Salt Spray · Shielding · Connection Resistance4U CPCI plug-in chassis · STIEE (Shanghai) · Report No. 23BAS01P35D32-00598 · per Q/CR 782-2020 · 2023-08
Vibration test report — REL Testing Report No. WX210107-005, IEC 61373
Vibration Test ReportChassis · long-life vibration, mechanical shock, functional vibration · REL Testing · Report No. WX210107-005 · IEC 61373-2010 Category 1 Body · 2021-01

Each report opens the full scanned original in a new tab — first pages shown above; complete scans include test data, results and lab seals.

Capacity

Annual production capacity

Product familyAnnual capacity
Functional chassis (with backplanes, cooling, wiring)8,000 units
Standard sheet-metal chassis200,000 units
EMC profile cabinets (shielded 19″ racks)5,000 units
Sheet-metal & power distribution cabinets8,000 units

Services

From standard parts to turnkey systems

  • Configuration — build your ideal product from standard components, fast
  • Modification — drilled holes, cut-outs, printing and special colors on standard products
  • Custom solutions — development and design of fully integrated systems from your requirements
  • Assembly — complete assembly of system components, tested and delivered ready to run
  • Express — expedited build options for urgent projects
  • Lifecycle support — documentation, CAD drawings, spare parts and long-term supply
C-BOX TECHNOLOGY plant building, Hefei

Industries We Serve

Trusted across demanding industries

We supply enclosure systems and precision sheet-metal parts to customers in power & energy, rail transit, automotive, industrial automation, electronics and research — including listed companies, system integrators and research institutions in China and overseas.

Power & EnergyGrid equipment and power electronics
Rail TransitSignaling & rolling-stock cabinets
AutomotiveTest systems and vehicle electronics
Industrial AutomationControl systems and machine builders
Electronics ManufacturingOEM / ODM instrumentation & systems
Telecom & DatacomNetwork and communication hardware
Medical & InstrumentsDevice enclosures and lab systems
Research & UniversitiesCustom experimental setups

Visit us or send us your project

Kunshan plant is 50 minutes from Shanghai by high-speed rail.

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