Keep in mind that no matter what type of plug an outlet might accept, voltage in China is 220v, 50 hz and not acceptable for your U.S. purchased appliances. You will need a converter for this.
The electrical current in China is 220 volts, 50 cycles (AC). Wall outlets take American-style plugs, with two flat parallel prongs; however, the outlets may not take the third, oversized prong used for grounding now in general use in the U.S.
To use your U.S. purchased electric-powered appliances, you will need a converter (see below), unless they are dual voltage, in which case you will need only the adapter for the plug. Most laptops operate equally well on 220 or 110 volts and only require an adapter. Make sure you use a power surge protector.
Do not use the 110 volt outlets in the hotels marked "for shavers only" with high-wattage appliances, such as blow dryers.
You may want to forget your electric shaver and bring along disposable razors, such as the Gillette/Schick custom disposable razors to save space in your suitcase. If you forget razors, you can always get them while in Guangzhou at Watsons or Friendship Stores.
Important note: Adapter plugs do not convert electricity. The picture below illustrates the male end of the adapter that will plug into the wall socket. The male prongs of the converter will plug into the adapter and the male prongs of the hair dryer will plug into the converter. Keep in mind that no matter what type of plug an outlet might accept, voltage in China is 220v (50 Hz) and is not acceptable for your U.S. purchased appliances.