The usage of ensure vs. insure is very important from a contractual perspective, while they sound very similar they can have very different meanings in a legal context. Insure means to safeguard against loss or damage, typically through the ... Read more
Electrical sockets (outlets) in the People's Republic of China usually supply electricity at between 220 and 240 volts AC. If you're plugging in an appliance that was built for 220-240 volt electrical input, or an appliance that is compatible with multiple voltages, then an adapter is all you need.
Given those forces, the chart below from GTM Research's Global PV Inverter Landscape 2013 report offers an interesting look at cost differences for inverters in different markets. It shows that a Chinese 500-kilowatt inverter costs a little over half of what a 500-kilowatt American inverter costs.