Arthur Chung
Arthur Chung
Assistant Director - Business Development at Defond Group Ltd
Hong Kong, China
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Company Website: Defond Group Ltd

Being the Assistant Director - Business Development, I am constantly in search of innovative and utilitarian projects to work on, creating a sound and positive partnership together. As Defond is a very vertically integrated company, providing solutions from ODM to OEM projects on electronics / mechanical modules, we offer a wide array of services to help project your product to launch into the market in a prompt and cost effective manner. Let's find a chance to talk and discover the possibilites to develop a partnership together.

Defond provides one-stop solutions to startup / global companies with sophisticated technical and quality requirements.

Aside from our original brand products, we offer design, co-development and contract manufacturing services of electro-mechanical modules with a focus on IoT products.

Leveraging our unique combination of electronic, electrical and mechanical expertise, we provide clients with total solutions from the initial design stages, planning through manufacturing.

Thank you for taking an interest in Defond Group. We look forward to hearing from you.

Below is a comprehensive outline of the services we offer:

ODM ServiceEngineering Services

  • Mechanical design
  • Electro-mechanical module design
  • Software/firmware development
  • Wireless product design
  • Design for manufacturing

Manufacturing Services

  • CNC machining
  • PCB assembly
  • SMT
  • Plastic injection
  • Metal stamping
  • Electro-plating
  • Winding
  • Laser cutting and printing
  • LEAN manufacturing
  • Process automation
  • Process qualification and control
  • Supply chain management
  • Complete testing solution

After-sales Service

  • Logistics management and distribution
  • Packaging (packing and localization)


  • Brake fluid level sensing
  • Convertible top lifter
  • Climate control module
  • Centre console module
  • Engine start and stop
  • Electronic parking brake
  • Fuel tank cap lock and release
  • Head light adjustment
  • Hook and boot release
  • Hazard warning light
  • Interior lighting
  • Mirror adjustment
  • Racing car spoiler extensions and retractions
  • Single and central door lock
  • Seat adjustment
  • Seat memory
  • Steering wheel adjustment
  • Sunroof control
  • Seat heating
  • Window lifting


Defond offers our clients with high-rating AC switches, including a comprehensive range of types on slide, rocker, rotary, micro, push button & keyboard switches.


Defond switches are widely used in Home Appliances, Electronic Equipment, Automatic Dispense Systems, Monitoring and Control Instruments. There is a very high chance that you have a Defond switch at home!


Electro-mechanical Modules (EMM)

  • Internet of Things (IoT) technologies based on wireless communications (controls / modules)
    • Bluetooth
    • RF
    • WiFi
    • Zigbee
  • App-based controls / modules (MFi 6.2 certified manufacturer)
  • Wireless charging
  • LED-related
    • Modules
    • Fixtures (indoor / outdoor / underwater)
    • System and control devices
  • Home automations
  • Home appliance control modules
  • HVAC systems
  • Security controls
  • Energy management and saving devices
  • Healthcare and medical products
  • GFCI / plugs / sockets


Our Capabilities

Accumulated years of technical know-how through the design and manufacturing of a wide product range, Defond has developed a solid design platform and modular designs.

Manufacturing Capabilities

  • Precision mechanical design
  • Mechanical tooling design and tooling manufacturing
  • Mechanical parts fabrication
  • Electronics system design on hardware, embedded firmware and software
  • Electronics with mechanical module manufacturing
  • Design and process testing and verification to support all manufacturing needs

Technology Capabilities

  • Control – triac / relay / for motor / home appliances
  • Sensing – temperature / humidity / current / chemical / capacitive touch
  • Communication, both wired and wireless, inter-board and inter-system

– Modbus, CANbus, Bluetooth, WiFi, Zigbee, RF 433/868/916/2.4GHzMHz

– Apple MFi 6.2 certified manufacturer

Fluid Control Components

Defond serves our clients with superior quality solenoid pumps and valves, flow meters, coils and other accessories.

Our standard product range is all certified by UL, VDE, NSF and WRAS and our design team is thoroughly acquainted with the various national standards. With Defond’s technical expertise and core strengths in winding, over-molding and assembly, designs can be easily tailored to meet client or application specific requirements.

  • Coffee machines
  • Vending machines (basic and cup-drink vending)
  • Garment care
  • Floor care
  • Irrigation system


  • Residential lighting
  • Commercial lighting
  • Industrial lighting
  • Agricultural lighting
  • Events and shows
  • Modules for other industrial or consumer products


By offering advanced integrated switches & modules (switches bundled with electronic modules and value-added assembly), Defond provides premium products and innovative solutions to the power tool market.

Innovation has been our driving force for decades and we will continue our endeavour to provide the best possible solutions to our clients.


Defond offers our clients with high-rating AC/DC switches; including a comprehensive range of different types of trigger, overhang, push button, and micro switches.