I am creating a data set with companies that manufacture chemicals in Barcelona, I found a company that creates dyes for textiles, packaging, paper and adhesives. I was looking into the NACE code 20 categories (https://staf.metabolismofcities.org/activities/3655/3884/) and wasn't sure into which category dyes fit into. The closest category it could fit into I thought would be 20.3 Manufacture of paints, varnishes and similar coatings, printing ink and mastics. But wasn't sure.
I was also wondering where should I stipulate the code, within the data set I upload? Or within the description or in the internal comments?
My last question is what if one company produces many chemical products like paints, coatings, adhesives, detergents etc. Would I include all those codes for that company within the data set?