How to understand “actual constructor”?

Rush construction during holidays! The expressway connecting Liupanshui is expected to be opened to traffic by the end of the year

Changyi professional decoration design network Club_ Gymnasium decoration construction

Road construction – Loufan bicycle track (Yunding mountain to Gao Junyu’s former residence tourist road) began construction on December 1

These sections will be closed for construction!

Announcement – closed construction announcement

Full list of national construction general contracting super grade enterprises approved by the National Bureau of construction (as of

Safety instruction manual for construction personnel of engineering project, with PDF full version attached, all staff can download and