First of all, please note that the World Travel Adapter Kit is used with some Apple power adapters only.
About the Apple World Travel Adapter Kit - Apple Support
Regarding your question, you may want to have a look at the description of plug type A here (select United States and/or China) about a certain difference:
https://iectest.iec.ch/world-plugs
If necessary, an alternative solution could possibly be to buy separate plug adapters locally.
As always, read the label on any electrical equipment that you are going to use in a foreign country. Make sure that the equipment in question can work with the line/mains voltage and frequency.