Custom Castings, Ltd. - Permanent metal casting and finishing in aluminum and zinc alloys. LA Aluminum - Supplies machined aluminum castings for commercial and military grade applications. Ramsden Industries Ltd. - Aluminum permanent mold castings and related services including engineering, 3D modeling and in-house mold making. Gudgeon Thermfire International Inc. - Specialist aerospace pattern tooling engineering and manufacturing. Serves the casting industry since 1946. Wrekin Shell Mouldings - One of the UK's premier foundries for the production of complex castings using the highly specialised shell moulding process. Asken Aluminium Foundry - Mainly manufactures permanent mold aluminium cast parts for automotive and machine industry. Berne Enterprises Inc. - Full service foundry specializing in production of shell molded castings. Materials include low and high alloys, ductile and cast iron, austinetic manganese, and carbon and specialty steels. Permocast - Specializes in aluminum castings and moldings, using the permanent mold process. Site provides detailed explanation of process and features compared with other casting methods.