개설서in English:opening document

Examples
with 개설서.

• 은행에서 계좌를 개설할 때 개설서를 작성해야 합니다.Eunhaengeseo gyeojwaleul gaeseolhal ttae gaeseolseoreul jaksanghaeya hamnida.You need to fill out the opening document when opening an account at the bank.