PLAB vs SEM Comparison

Photronics Inc is a U.S.-based company principally engaged in the manufacturing of photomasks, which are high-precision photographic quartz or glass plates containing microscopic images of electronic circuits. Photomasks are a key element in the manufacture of integrated circuits (ICs) and flat-panel displays (FPDs) and are used as masters to transfer circuit patterns onto semiconductor wafers and FPD substrates during fabrication, as well as to a lesser extent, other types of electrical and optical components. The Company has manufacturing facilities in Taiwan, China, South Korea, the United States, and Europe, and generates revenue globally, with Taiwan contributing the majority of total revenue.

Select Medical Holdings Corp is a healthcare company that operates through three segments: critical illness recovery hospitals, rehabilitation hospitals, and outpatient rehabilitation clinics. Critical illness recovery hospitals which derives maximum revenue consists of hospitals designed to serve the needs of patients recovering from critical illnesses, often with complex medical needs. The rehabilitation hospital segment consists of hospitals designed to serve patients that require intensive physical rehabilitation care. Patients are typically admitted to critical illness recovery hospitals and rehabilitation hospitals from general acute care hospitals. The outpatient rehabilitation segment consists of clinics that provide physical, occupational, and speech rehabilitation services.