Dr. Wei Zhang, Packaging Sustainability Manager, has been a Senior Material Scientist with PTI for the last 8 years. Wei represents PTI at APR sitting on the technical committees for PET, polyolefins, and film, and as an active member has developed and refined several APR critical guidance testing protocols.  She had extensive experience with various plastic materials, including bio-based and bio-derived. She works with major brands to understand the capabilities of advanced recycled materials. She also works with materials producers to develop PEF for CSD packaging, and she has processed PHA PHSB container and EBM containers.