Contact
Directions

YEST accepts advance application for a visit for information protection. Please make advance reservation before visit.
Especially, visitors for in-house workshop of YEST (clean room and semi-clean room) need advance visit reservation.

Move to application for a visit
  • Headquarter

    27 Masan 12 street, Jinwee-myeon, Pyeongtack, Gyeonggi-do

    Phone: 031-612-3333
    FAX: 031-612-3399

  • R&D Center

    27 Masan 12 street, Jinwee-myeon, Pyeongtack, Gyeonggi-do

    Phone: 031-612-3333
    FAX: 031-612-3355

Customer Support Contacts

Application and employment information related inquiry

Employment & labor / 031-612-3333

Investment related inquiry

Investment / 031-612-3337

Product and A/S related inquiry

Sales&Product / 031-612-3333

Voice of Customer

YEST runs reporting channel to allow employees to report wrongful/illegal act (act of abusing one's power, sexual harassment, workplace bullying) for compliance with ethical management. (Ensuring anonymity to the reporter and confirming that there is no disadvantage accordingly.)