CJ Aluminium are the UK’s leading independent supplier of Aluminium extrusions and fabricated products. We are able to offer customised, painted and anodised products. We also provide a stockholding service to ensure your storage costs are kept to a minimum. Aluminium Extrusions. We design, manufacture and stocks bars, components and assemblies made from bespoke Aluminium Extrusions. Our specialty is to take your general concepts and turn them into finished components using a variety of design, prototyping, engineering and finishing techniques. We also specialise in Brise Soleil and Ventilation Louvre systems. CJ Aluminium designs and manufactures each project on a bespoke basis using extruded components which have been tested in service for decades. Individual project specifications can be tested at BSRIA to certify compliance. Please contact us now with your aluminium enquiry and we'll taylor a solution for you.