When manufacturers emphasize that you need to do timely maintenance of your HVAC systems they do mean it. It is not an option.
One of the essential requirements of a house or a building is a well-connected water supply and hygienic sewage treatment. So plumbing is an important aspect of a building.
In a rapid growing economy there will be a series of facilities including industries, health infrastructures and educational institutions.
Work safety is a matter that is being discussed globally as a part of basic facilities to ensure employee well-being.
