e commerce api

Hello. I need full synchronization between a new ecommerce site and products from 2 other sites. Full synchronization of the products, categories, subcategories etc. Then synchronization of the inventory, prices, etc.
Just full synchronization of everything related to the store products.

This is our new site -

https://kolbuyit.com/

These are the two sites from which to take the products from -

https://www.bb-center.co.il/
https://citysport.co.il/

Thank you