Usage: food stall , Baking Pastry shop ,hotels and restaurants, western cake shop ,civil aviation, BBQ,family use ,coffee cup , microwave food heating and so on. Material: aluminium foil 8011 . Temp Range: microwave safety. Shape : rectangle,round, heart, oval,roll, other out of shape. leakage: heat seal container n leakage. Heat and fresh preservation : good sealing property help to keep the temperature and food fresh. Safety: the product in turned edge and some all the edge is rolled(such as airline foil container). the aluminum foil material is safe enough to contact food. cover: aluminum foil cover, plastic cover, composite cover(one side is aluminum foil and one side is paper , this one is much cheaper than other two). Environmental : eco-friendly