Advice
In my opinion, the purpose of this internship/co-op is to determine if you and Ravago/Entec are a good fit. At an engineering co-op you likely work on a project that is similar to what you do in plastics processing labs, however at entec work is more business driven. I found myself wanting to experience more of the business side of the plastics industry and Ravago/Entec gave me that opportunity. My advice is to think of their summer co-op program as trying something different and taking advantage of the opportunity to determine if this career path is a good fit for you.