Collect 500 USA company contacts that meet specific criteria

Please bid on a project to provide me with 500 company names with website, phone number & mailing address. Each of the listed companies will have to be verified by you that they use custom silicone rubber keypads or custom plastic enclosures, this is done by you visiting their website. I do NOT have a list to provide you, when bidding please specify how you will be getting the names (if you will be buying a list, using a directory, phonebook etc.) Here are a few example companies that you can visit and see their website, they are clearly the manufacturer of their own products and when you view their products you can see that the most likely use custom silicone rubber parts/keypads and/or custom injected moulded plastic parts or enclosures. [login to view URL] [login to view URL] [login to view URL] Custom silicone parts can be anything from a custom silicone rubber button, silicone rubber that you find on your mouse, silicone rubber that you may find on cell phones, key fobs or almost any other electronic device. Custom plastic parts is very wide, but can be from small boxes with holes and to an intricate case like a laptop. You can search the internet to find out more about custom silicone parts & keypads and custom injection moulded plastic. If you have any questions please let me know. Thank you.