Door and Window Construction Qualification

The construction qualification of doors and windows belongs to the qualification of building decoration and Decoration Engineering. Therefore, for the application of door and window construction qualification, you can consider applying for the qualification of Building Decoration Engineering and the professional contracting qualification of building curtain wall engineering. Separate door and window construction qualification has been canceled in 2015.

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Top 10 Brands of Doors and Windows
First tier brands of doors and windows