Paul-Son sells the most chips in the US market.
Bud Jones always was number 1 in the foreign market. Not sure if that is still true or not.

GGS used to run 2nd in the Foreign market, again, don't know that is true today.

Chipco has cut into all markets.

I believe Blanchards pokerchips.com might be the biggest in the online and home market. Maybe he will see this and post.

Chip inserts are inserted in different ways depending on the manfacturing process. Some are molded right into the chip. Someone on this BB has a scan of the several step process that RT Plastics/GGS uses to insert, inserts. Hopefully they will see this.

Inserts are not supposed to be duplicated. There are millions of combinations.

Today most companies use an injection process.
TR King and Paul-Son still use compression molds.