1. 3D HUBS B.V.
2. 3D Systems Inc.
3. BASF SE
4. Carpenter Technology Corporation
5. Desktop Metal Inc.
6. EOS GmbH
7. Markforged Inc.
8. Optomec Inc.
9. Pollen AM inc.
10. Prodways Group
11. Proto Labs Inc.
12. Sandvik AB
13. Steinbach AG
14. Stratasys
Ltd.
15. Tethon3D
16. The ExOne Company
17. TRUMPF GmbH + Co. KG