1. 3D Systems Inc.
2. Arc Wireless Solutions Inc.
3. Beijing Tiertime Technology Co. Ltd.
4. Carbon Inc.
5. Desktop Metal Inc.
6. EOS GmbH
7. GE Additive
8. Hewlett-Packard Development Company
L.P.
9. H?gan?s AB
10. Koninklijke Philips N.V.
11. Materialise NV
12. Optomec Inc.
13. Stratasys
Ltd.
14. taulman3D
LLC
15. The ExOne Company