Shopify App - API Product Feed Integration

NOTE:- PREFERABLY A CHINESE SPEAKING DEVELOPER I need to create a custom private app on Shopify to import products using API keys from [login to view URL] app will have one textbox that can be used to input the API URL and upload button. API URL will be the variable. I have thousands of API keys from suppliers that I need to use, so I need an app that can manipulate any API format to import products. The app should do the following: - Products integrated into your own Shopify store. - Inventory updates sent automatically to your store - Fulfill Shopify orders with a single-click - Generate custom pricing markups - Edit Product title, description, price and images automatically added for every item. - Easily add and sync items with a single-click - be able to sync with the suppliers website/API - so when they delete or add new products its sync with my website.