| Symbol | Name | Country | Exchange |
|---|---|---|---|
| POS | Plexus Holdings Plc | UK | LSE |
| SLB | Schlumberger NV | FR | PA |
| 002278 | Shanghai SK Petroleum & Chemical Equipment Corp Ltd | CN | SHE |
| 603036 | Jiangsu Rutong Petro-Machinery | CN | SHG |
| 603800 | Suzhou Douson Drilling & Production Equipment Co Ltd | CN | SHG |
| 688377 | Nanjing Develop Advanced Manufacturing Co Ltd | CN | SHG |