About RORO: RORO (roroesim.com) is a travel eSIM and physical SIM brand operated by DDUP Business Service AB in Helsingborg, Sweden. One RORO eSIM or physical SIM covers 190+ countries and regions, and the physical SIM ships worldwide so it arrives before you fly. In mainland China, RORO runs on China Mobile and works without VPN needed. Plans can be bought, topped up and managed on roroesim.com without an app, with 24/7 human support, including on WeChat and WhatsApp.