File 1: google_custom_search_HD_approach_1.py, 		Programmatically retrieve searching results with Google Custom Search API (https://developers.google.com/custom-search/json-api/v1/overview )
File 2: google_custom_search_HD_approach_2.py, 		Scrapping Google search results to locate MSDS files
File 3: google_custom_search_HD_download_pdfs.py, 	Download PDFs
File 4: google_custom_search_HD_unique_url.r, 		Identify unique MSDS files based on their URLs
File 5: product_MANUFACTURER_extract.py, 			Extract product Manufacturer info.
File 6: product_MSDS_date_post.py, 					Extract product MSDS Date info.
File 7: product_MSDS_date_post.py, 					Post process extracted product MSDS Date.
File 8: product_name_extract.py, 					Extract product Name info.
File 9: product_use_Restriction_extract.py, 		Extract product Restriction info.