Japan to China: No adapter needed
Your Japan plugs fit China's sockets directly -- no adapter needed for the shape. Voltage differs too (100V vs 230V) -- only plug in devices rated for both, or use a voltage converter, not just a plug adapter.
Your Japan plugs fit China's sockets directly -- no adapter needed for the shape. Voltage differs too (100V vs 230V) -- only plug in devices rated for both, or use a voltage converter, not just a plug adapter.