Are the electrical plugs in Jiamusi compatible to the USA electrical plugs ?

The shape of a socket varies between countries, a portable plug adaptor may be necessary. It can be purchased from travel stores (such as Franzus) or electronics stores (i.e. RadioShack, Best Buy) in your local countries. Also you can buy it in China. For detailed information about the Electricity in China, you can search this webpage: https://www.travelchinaguide.com/essential/electricity.htm .