Celanese EVA Performance Polymers At Celanese EVA Performance Polymers, we are focused on being your best supplier. We use our market knowledge, applications expertise and manufacturing excellence to create unique solutions that deliver value to your business – one customer at a time. When you are ready to develop your next controlled-release pharmaceutical product, we’re ready to support your efforts. As an EVA excipient supplier committed to the pharmaceutical industry, Celanese EVA Performance Polymers can help with your next successful product with our excellent technology, customized service and regulatory expertise.