Itek

Itek tests non-memory (system) semiconductors, checking finished chips and raw wafers to sort good units from defective ones before they ship.

It also makes graphene-based advanced materials used in ballistic-resistant fabrics, fire-protective helmets and suits, and antimicrobial products, and it provides facility operation and maintenance services for semiconductor cleanrooms as well as cold-chain temperature-monitoring solutions for pharmaceuticals and fresh food. Listed on KOSDAQ, Korea's tech-focused small-cap exchange, the company operates across these four distinct business lines rather than concentrating on a single product.