1. Pumpenfabrik Wangen GmbH, Germany.
**
2. Wap Reinigungssysteme GmbH,
Germany.
3. Weda GmbH, Germany. **
4. Weidemann Maschinenfabrik, Germany.
**
5. Weiss GmbH, Germany. **
6. Welger GmbH, Germany. **
7. Westfalia, Germany. **
8. Wubbels GmbH, Germany. **
9. Wuhlmaus,
Germany.