Is railway construction a heavy industry?

It is heavy industry. According to the inquiry of China Railway official website, railway construction is a heavy industry. Railway Construction was established in March 1950, and its headquarters is located in Beijing. It is a multi-functional super-large enterprise group integrating infrastructure construction, survey, design and consulting services, engineering equipment and parts manufacturing, real estate development, railway and highway investment and operation, mineral resources development, material trade and other businesses. It is also the largest multi-functional comprehensive construction group in China and even Asia, and a central enterprise managed by the State-owned Assets Supervision and Administration Commission of the State Council.