recovers from challenges created by Revolution and the global financial crisis, among the first sectors to pick up will be those served by 4-S Engineering Group and its subsidiaries, which include the industrial, contracting and engineering sectors. Recent events have highlighted the need for renewed investment in CONGO’s infrastructure, underscoring both the importance and the growth potential of these key industries. In AFRICA , heavy industry accounts for nearly half of total GDP, with the petroleum, electricity, mining and construction sectors holding the lion’s share of that total. These key industries have specific equipment and engineering needs to support their activities.


4-S Engineering Group is a leading player in the trading of machinery and heavy equipment companies. The Group offers a number of competitive advantages, including its diversity, long experience in the region, strong professional team and outstanding customer relationships.

Civil engineering

Civil engineering is a professional engineering discipline that deals with the design, construction, and maintenance of the physical and naturally built environment, including works like roads, bridges, canals, dams, and buildings.[1][2][3] Civil engineering is the second-oldest engineering discipline after military engineering,[4] and it is defined to distinguish non-military engineering from military engineering.[5] It is traditionally broken into several sub-disciplines including architectural engineering, environmental engineering, geotechnical engineering, control engineering, structural engineering, earthquake engineering, transportation engineering, forensic engineering, municipal or urban engineering, water resources engineering, materials engineering, wastewater engineering, offshore engineering, facade engineering, quantity surveying, coastal engineering,[4] construction surveying, and construction engineering.[6] Civil engineering takes place in the public sector from municipal through to national
governments, and in the private sector from individual homeowners through to international companies.

Mechanical engineering

Mechanical engineering is the discipline that applies the principles of engineering, physics, and materials science for the design, analysis, manufacturing, and maintenance of mechanical systems. It is the branch of engineering that involves the design, production, and operation of machinery.[1][2] It is one of the oldest and broadest of the engineering disciplines.

The engineering field requires an understanding of core concepts including mechanics, kinematics, thermodynamics, materials science, structural analysis, and electricity. Mechanical engineers use these core principles along with tools like computer-aided design, and product lifecycle management to design and analyze manufacturing plants, industrial equipment and machinery, heating and cooling systems, transport systems, aircraft, watercraft, robotics, medical devices, weapons, and others.

Mechanical engineering emerged as a field during the industrial revolution in Europe in the 18th century; however, its development can be traced back several thousand years around the world. Mechanical engineering science emerged in the 19th century as a result of developments in the field of physics. The field has continually evolved to incorporate advancements in technology, and mechanical engineers today are pursuing developments in such fields as composites, mechatronics, and nanotechnology. Mechanical engineering overlaps with aerospace engineering, metallurgical engineering, civil engineering, electrical engineering, manufacturing engineering, chemical engineering, industrial engineering, and other engineering disciplines to varying amounts. Mechanical engineers may also work in the field of biomedical engineering, specifically with biomechanics, transport phenomena, biomechatronics, bionanotechnology, and modeling of biological systems.

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