credential
Electronic and intelligent first-rank level, fire control facilities, two class construction of electromechanical ,three level communication engineering
CSST first-rank enterprise qualification
Building intelligent systems design, fire control facilities engineering design special class a grade
Cable radio and television first-rank enterprise general contracting
Municipal public works construction contracting Sanji, urban and road lighting engineering contracting Sanji, environmental engineering contractor Sanji, construction services, regardless of grade