Create solution in Magento to insert, upgrade, delete product in ecormerce site

The functionnality request is the possibility to update a ecommerce site with information from suppliers websites. I need to start the process in the magento admin panel Product from 3 suppliers sites 1 site have API 2 others don’t have API You have to program a solution to extract all products from the website of supplier The information need to download from website supplier • Product title • Description product • Quantity • Price • Sku • Picture • category • field magento original price Applicate formula to calculate the price A match table will create to associate category suppliers to my website Operation need Insert, update and delete Before bid, verify, if you can do the job, I don't want to spend my time and need to respecte the delay you give