You can search companies by activity, product types, certification, species and any combination of those criteria.
After checking all the criteria you want click "Start searching"
Examples:
To see all the sawmills, check "Sawmills" in the Activity box and click "Start searching"
To see only sawmills that can supply beech strips, check "Sawmills" in the Activity box and "Strips" in the Products box and "Beech" in the Species box and then click "Start searching".