This is a set, a kit. This also explains the company's activities. After all, the company provides interior components, that is, the necessary set for the implementation of the developed design and interior decoration. A set of furniture, plumbing, lighting, decor - everything that is used in interior visualization, without searching on the Internet and independently calling production facilities.
This is an abbreviation of Professional Artistic Design. These words directly explain the company's activities. Also "A pad" is a notebook, tablet, used mainly for drawing and by designers.