Teaching in the field of residential and commercial construction, materials engineering, installation of building components, design and installation of windows and doors; practical teaching in the field of residential and commercial construction, materials engineering, installation of building components, design and installation of windows and doors; arranging and conducting training courses in the field of residential and commercial construction, materials engineering, installation of build...

Non-metal building materials, namely, fascia, soffits, interior non-metal window shutters, roller shutters; door and window woodwork, namely, wood door and window frames; non-metal windows, doors, and window and door frames; non-metal partitions for building; construction units, namely, non-metal door units, non-metal window units, non-metal roller shutters; non-metal walls, namely, non-metal curtain walls; non-metal windowsills; non-metal transportable buildings

Non-metal windows and doors