E swailwe ka "cidb-grade-upgrade"

CIDB Grading e Hlalositswe: Seo Digrade 1-9 di se Bolelang

Kamoo CIDB grading e sebetsang Afrika Borwa: seo grade 1 ho isa 9 e se bolelang, dihlopha tsa mesebetsi tse kang GB le CE, le bopaki ba ho etsa upgrade.