Do you want to be a supplier for the Global Fortune 500? Here is the link for the supplier registration pages for the companies listed (correct in 2019). Where its difficult to locate the supplier registration page, a general link to the organisation is added as a replacement
1 Walmart
https://supplier.walmart.com/home
2. Sinopec Corp
http://www.sinopec.com/listco/en/about_sinopec/our_business/our_partners/en-supplier-sb.shtml
3. Shell
https://www.shell.com/business-customers/shell-for-suppliers/qualify-as-a-supplier-to-shell.html
4. China National Petroleum
https://www.cnpc.com.cn/en/aboutcnpc/aboutcnpc_index.shtml
5. State Grid
http://www.sgcc.com.cn/ywlm/index.shtml
6. Saudi Aramco
https://www.saudiaramco.com/en/workingwithus/suppliers/become-a-supplier
7. BP
https://www.bp.com/en/global/corporate/who-we-are/supplier-expectations.html
8. Exxon Mobile
https://corporate.exxonmobil.com/procurement/supplier-collaboration
9. Volkswagon
http://www.vwgroupsupply.com/one-kbp-pub/en/kbp_public/homepage/homepage.html
10. Toyota
https://onetoyotasupplierdiversity.com/start-your-impossible/supplier-portal
11. Apple
https://www.apple.com/procurement/
12. Berkshire Hathaway http://diversity411.com/diversity/supplier-diversity-portals/berkshire-hathaway-inc-supplier-diversity-program/
13. Amazon
https://www.amazon.co.uk/gp/help/customer/display.html?nodeId=201909040
14. United Health Group https://www.unitedhealthgroup.com/suppliers/vendor-portal.html
15. Samsung https://www.samsung.com/uk/aboutsamsung/sustainability/supply-chain/
16. Glencore https://www.glencore.com/en/suppliers
17. Mckesson https://www.mckesson.com/biopharma/medical-supplier-program/
18. Daimler https://supplier-portal.daimler.com/portal/en
19. CVS Health https://www.cvssuppliers.com/