AEL Crystals Limited. Is one of the largest suppliers of quartz frequency control components in the UK. AEL Crystals offers a full range of frequency control products, with ongoing development plans in existing product lines, as well as the introduction of new technological innovations. The product range includes quartz crystals, oscillators, filters, surface acoustic wave devices, MEMS products, antennas, and dielectric filters. AEL Crystals engineers are able to work closely with customer engineers to ensure that all specifications are fully compatible for customer-specific applications.