| Symbol | Name | Country | Exchange |
|---|---|---|---|
| CLWT | Euro Tech Holdings Company Limited | US | NASDAQ |
| MKSI | MKS Instruments, Inc. | US | NASDAQ |
| IFCN | Inficon Holding | CH | SW |
| 300445 | Beijing ConST Instruments Technology Inc | CN | SHE |
| APN | Aplisens SA | PL | WAR |
| IFCNF | INFICON Holding AG | US | US |