Open configured website in embed browser from my website

I wanted to open webpage(third party) as embed browser when click on the specific link from my webpage. If I click on the populate button, then read data from DB and populate in the third party website tesxtboxes as well when i click on the submit button from third party website i need to capture the data and save it to my DB.

I just want to sync third party website and my website data at same time.