Foil doesn't burn plants.white paint is best tin foil brns your plant/cooks it if temps rise seen,paper is a fire hazord....
panda film is 2 sided vinyl, one side is black and one is a highly reflective white. Alot of growers use that or Mylar to line there grow rooms for reflectivity. It usually comes in 6m size. You can find good deals on Mylar and Panda film on eBay.What is "panda film/plastic"?
Do you have a preference: Panda film vs. Mylar? An advantage of one over the other?