Could Aehr Test Systems Become the Next ASML?

This semiconductor testing equipment maker has a lot of upside potential.ASML (ASML -3.11%) is one of the world's most important semiconductor equipment companies. It's the largest producer of lithography systems, which are used to optically etch circuit patterns onto silicon wafers. It's also the only supplier of high-end extreme ultraviolet (EUV) lithography systems for producing the world's smallest and densest chips.ASML's monopolization of that crucial technology enabled it to increase revenue at a com ...