• We put roofs over heads,
    but we also put work boots on feet
  • "Accept responsibility and take accountability
    for all our actions and outputs" (No More Finger Pointing)
  • "Every worker goes home from each of our jobs, every day"
Civil and Engineering

Construction & Civil engineering

Professional discipline that deals with the designing, planning, construction, and management of infrastructures such as roads, tunnels, bridges, airports, railroads, facilities, buildings, dams, and utilities.

Tendai ICT


We Make IT Happen. This portfolio covers the ever evolving IT Sector in Procurement, total business systems integration services, telecommunication and Managed Services.

Health and Safety

Safety Health & Environment

The Key to your safety is in our Hands.


Doing it right the first time.


We are Passionate about solving our Customer`s problem, not proving our solution


MRN Investment Group is a broad based black-owned investment holding company. It is focused on opportunities in Construction & CIVIL Engineering, ICT, Healthcare, Business Security Solution, Renewable energy, Safety Health & Environment Technologies.

By creating a culture of service excellence though professionalism and understanding our client’s needs we can deliver on our promise of becoming a leading brand providing the highest quality of services.

The driving force behind the company is management professionals who are hands on dedicated in each project. Their experience ranges from Safety Health & Environment, IT to Engineering which assures you that all this decade’s worth of experience will be effectively utilized to meet our client’s needs. The fact that management wholly own the company assures you of 100% commitment.

Vision and Mission



A list of our current investment companies.

TENDAI ICT was formed and launched in 2014 by Andrew Maringa (IT Projects, IT Infrastructure Specialist and Microsoft Technologies Expert).

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We provide specialist support, training and consultancy to the South African manufacturing and service sectors in the key areas of Health and Safety, Environment and Quality Management Systems.

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Founded in 2015 by Mr Aaron Maringa, The Organization is a 100% black owned firm, it is Level 1 B-BBEE.

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Astute IoT is a wholly owned subsidiary of Tendai ICT.

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MRN Environmental Technologies PTY (Ltd) (MRN ET) is a recycling company serving the environmental needs

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A list of our Companies who trust our brand.