| ■ | Aluplast GmbH | Germany |
| ■ | ARTEC Fenstersysteme GmbH | Russia |
| ■ | Bocchiotti S.p.A | Italy |
| ■ | Fenesta Building Systems | India |
| ■ | Funke Kunststoffe GmbH | Germany |
| ■ | GEALAN Fenstersysteme GmbH | Germany |
| ■ | Greiner Extrusionstechnik | Austria |
| ■ | Henniges Elastomer- und Kunststofftechnik GmbH & Co.KG | Germany |
| ■ | K-Profile AG | Switzerland |
| ■ | Kunststoffwerke Zitta GmbH | Austria |
| ■ | Primo Danmark A/S | Denmark |
| ■ | Profine GmbH | Germany |
| ■ | Rehau AG & Co | Germany |
| ■ | Technoplast Kunststofftechnik GmbH & Co.KG | Austria |
| ■ | VEKA AG | Germany |