If Compostable Products haven't broken down - Compost Business

What to do if PLA or cellulosic compostable products haven't broken down at the end of the initial processing phase.
If you want to start a compost business, these videos will help you:
/ @compostbusiness (my channel)
These articles and spreadsheets will help you start a compost business:
www.compostbusiness.com
If you want ongoing consulting for your compost business, contact these folks:
www.o2compost.com/
Here are some other great resources for compost businesses:
www.biocycle.net/ (BioCycle)
www.compostu.net/ (Compost University)
www.compostingtechnology.com/... (Green Mountain Technologies training videos)
ilsr.org/composting/ (Institute for Local Self Reliance - Composting)
Podcasts that will help you:
The Composter Podcast (mostly about composting facility operation)
The Community Composting Podcast (mostly about food scraps collection businesses)