Producers of FEF-PEF
- AEROFLEX Co. Ltd (THA) Thailand
- Armacell GmbH (TR) Kestel/Bursa, Türkei
- Armacell GmbH (D) Münster
- Armacell Iberia S.L. (E) Begur
- Armacell Poland Sp. z. o. o. (PL) Sroda Slaska
- Armacell UK Ltd. (UK) Oldham
- Calorifugados Frane S.L. (E) Vandapac Company Ltd., Thailand
- OK Company S.A. (E) Anglesola - Lleida