Germany to São Tomé and Príncipe: No adapter needed
Your Germany plugs fit São Tomé and Príncipe's sockets directly -- no adapter needed for the shape. Voltage is compatible (230V vs 230V), so any dual-voltage or matching device is fine either way.
Your Germany plugs fit São Tomé and Príncipe's sockets directly -- no adapter needed for the shape. Voltage is compatible (230V vs 230V), so any dual-voltage or matching device is fine either way.