H&H Sign Systems, a division of H&H Alloy sales Limited, supply all types of aluminium signs and accessories. H & H Alloy Sales were established in 1979 as a ferrous and non-ferrous stockholder. Through demand it became evident that the industry required a specialist manufacturer and stockist of standard road traffic blanks. As a result H&H Sigh Systems began producing circles, triangles and supplying sheets from stock delivered throughout the UK and Ireland. See technical details