Standart:China Metal Enclosure System Super Contractor Qualification Certification Numara:CMBE-C-032 Veriliş Tarihi:2014-10-07 Son kullanma tarihi:2028-10-07
Standart:First-Class Qualification for General Contracting of Construction Engineering Numara:D137056585 Veriliş Tarihi:2022-03-21 Son kullanma tarihi:2027-03-01