Business name: Rettre Seongsu | CEO: Kim Joon-sung | Registration number: 559-08-02296
Address: 1F, 37-18, Yeonmujang-gil, Seongdong-gu, Seoul, Korea (Seongsu-dong 2-ga) | E-commerce Business Registration No. 2025-Seongdong-0820 | Phone number: 0507-1301-4617 | Personal information manager: Junseong Kim rettre1201@gmail.com