Hello, the supplier is http://www.kkpmo.com .
Quite clearly, you will not find 1:1 replacements, but you can order custom made spur gears.
When you combine together the gears (special glue / brazing) and use proper shaft sleeves as spacers, you can get a perfect replacement for worn out or broken gears.
In my unit I had missing cogs on midway gears B and C 4-955-496/7, I replaced them with metal gears (brass). Module is M0.3.
I have now ordered some spares for a D-Z555 unit with stuck sled. In that case M0.25.