Which converters for use in china are safe for charging "electronic" devices (laptop)

Many electronic devices like cell phones, ipads, cameras, and laptops have built-in converters. Check on your charger for each item and there should be an area of small print marking the voltage of the charger. If it says 110~220V then your device will convert itself. If it just says 110V or 120V then you will need a charger.

But, even if you don't need a charger, you will need a plug adapter.