PLAB vs SID 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.

Companhia Siderurgica Nacional is an integrated steel producer. together with its subsidiaries operates in five main business segments: Steel industry: production and marketing of flat and long steels; Mining: extraction, processing and marketing of iron ore, tin, limestone and dolomite; Cement: production and commercialization of bagged and bulk cement, in addition to aggregates, concrete, and other related products; Energy: generation and sale of energy from almost all renewable sources; and Logistics: participations port concessions and fleets of road transport vehicles. The group generates the majority of its revenue from the Steel industry segment. Geographically, it derives a majority of revenue from Asia.