The company has obtained class I professional contracting certificate for electromechanical equipment installation engineering, class II professional contracting certificate for building decoration engineering and class II professional contracting certificate for building intelligent engineering issued by Shenzhen housing and Construction Bureau

Establish "Zonkin Environment" company

The company has obtained the grade II professional contracting certificate for electromechanical equipment installation engineering, grade II professional contracting certificate for building decoration engineering and grade II professional contracting certificate for building intelligent engineering issued by Shenzhen housing and Construction Bureau

The company has obtained the grade III professional contracting certificate for electromechanical equipment installation engineering, grade III professional contracting certificate for building decoration engineering and grade III professional contracting certificate for building intelligent engineering issued by Shenzhen housing and Construction Bureau

Create "Gantong" company