J Kumar Infraprojects is an Indian construction company that operates in the infrastructure sector. It is involved in various construction projects, including civil engineering, real estate development, and the construction of transport infrastructure such as roads and bridges.  The company engages in civil engineering projects, which may involve the construction of buildings, structures, and other infrastructure facilities. It is involved in real estate development, which may include residential and commercial projects.  The company participates in the construction of transport infrastructure, including roads and bridges.