Ktis 

Headquartered in Seoul, South Korea, and established in 2001, KTIS Corporation is a prominent provider of customer service solutions within the nation. The company's diverse offerings include both general and specialized consultation for fixed products and technological solutions, alongside comprehensive customer contact management. These extensive contact services cover operating call centers, providing strategic advisory, offering infrastructure support such as facility leasing, construction, and application development assistance, as well as talent recruitment, training, and outsourced contact operations. KTIS further handles numbering services. Additionally, the corporation diversifies its business through the distribution of mobile products and the provision of tourist reward programs.