JT

JT makes the machines that test semiconductor chips after they are packaged, equipment such as test handlers and burn-in sorters that check whether finished chips work correctly before they leave the factory.

Its customers include major global memory chipmakers, and it also supplies equipment to outsourced semiconductor assembly and test (OSAT) companies worldwide. Listed on KOSDAQ, Korea's tech-focused small-cap board, the company's core business is back-end semiconductor test equipment, and it is expanding into laser processing equipment and automotive electronics testing as additional product lines.