Build Tool that will Automatically Scrape Product Information from Website

I need a program that will scrape all of the product information (including all specifications of each product, any associated datasheet, protocol, manuals, and image files) for all the products from a website. Please note that all images and other files should be scraped in the form of a file, put into a zip file with the file name starting with the catalog number of the respective product (for multiple types of file of the same product, for example if there are multiple images for one product, then it should be catalog number followed by "_" and then 1, 2, 3 etc. The files should also be scraped in the form of a URL (.pdf or .png). Note this applies for all product associated files present on site. If there are alternate sizes of the same product, then we need to have a separate sheet which shows each combination of each sizing relationship. Please note that all product information should be listed in columns/rows and sheets within an excel file in an organized manner. Each column heading must indicate the type of information that was scraped based on the specification/information type which is noted within the site. This program should be re-runable at anytime to updated all the product information. and again create another excel file full of updated information (as long as the site interface will not change). A template will be provided to show an example of how the product information should be retrieved.