How do I parse sites like this?

https://finance.daum.net/exchanges

I'd like to parse the above site

The screen that comes out of the source view and the F12 press in Chrome is different, so I can't read the data in normal cases

When you read the data, you read the data when viewing the source.

There is no exchange rate information I want to parse here, so how can I parse in this case?

For your information, I'm going to use Java.