Kubekwe lugege nge "upgrade-cidb-grade"

CIDB Usonkontileka Grading System SA | Thuthukisa Isu

I-CIDB Uhlelo lokugreda losonkontileka eNingizimu Afrika: indlela yokuhlela ukuthuthukisa, yibuphi ubufakazi obubalulekile, kanye nendlela yokugwema izikhala