Is finding a genuine custom poker chips service provider site a real challenge?

It is not clear just what you are trying to ask. There are plenty of sites cataloged by google.com linking to poker chip manufacturers, and most of them are custom chips. What in the world is a "service provider", and what do you consider "genuine"?

Your base question is "Is this a challenge"? No. You just need to know that all links are indexed by google.com.