Firesafe Fire Rated Ductwork Limited are fire resisting ductwork experts. Their Caswell Firesafe® brand was developed in 2003 and continues to be extensively evolved ever since. In 2019 they gained a Queen’s Award for Enterprise : International Trade. Caswell Firesafe® is sold internationally by means of their Licenced Production Associates http://manueljarfv.blogminds.com/developing-caswell-firesafe-fire-resisting-ductwork-globally-4794939