Rice Cracker factories

Hi Maybelline, I think you could take a look at this video, maybe you'll like this place:

Niigata Senbei Kingdom
https://planetyze.com/en/japan/niigata/niigata-senbei-kingdom

The work you should look for on google is "senbei" or "osenbei", that's rice cracker in Japanese, it'll help your research.

I found here for you the:
-Holland Sembei Factory (2-24 Ryoucho, Sakata 998-0832, Yamagata Prefecture)
-The Senbei Factory Takosenbei no Sato (4155 Nakada, Awaji 656-2163, Hyogo Prefecture )
-You should also take a look at the "Setouchi City Local Senbei Maker" (604-1 Okuchō Toyohara, Setouchi-shi, Okayama-ken 701-4223)

I hope this helps!