What about the Qualification of Door and Window Engineering?

Q: Do you want to know how to handle the qualification of door and window engineering?

A: Before 2015, there was a single aluminum alloy door and window qualification, but now it has been canceled. Now for door and window engineering qualification. You can consider applying for the qualification of building decoration and Decoration Engineering and the professional contracting qualification of building curtain wall engineering.

Because the qualification of door and window engineering belongs to the qualification of Building Decoration Engineering.