Reasonably extending the service life of existing buildings not only has huge economic value and social benefits, but also is safe and reliable, and it is also necessary and feasible.
Reasonable extension of both building life is not only of great economic value and social benefits, but also safe and reliable, but also necessary and feasible.
Reasonable extension of the service life of existing buildings not only has great economic value and social benefits, but also is safe, reliable and necessary and feasible.