About plastic wrap: This plastic wrap is ultra-tight and food-grade PE film with national QS food safety certification. It is a dual-purpose household product, far from the loose films sold by unscrupulous merchants who claim to have xxxE, or the so-called 'xxxE'. These products have no information on the manufacturer, and are produced in blacksmith shops using recycled waste materials. Would you dare to use such a film? Some of them also use the gimmick of giving away essential oils when buying the film to attract those who like to take advantage of cheap deals. Everyone knows that the saying 'you get what you pay for' is true. If it weren't for the cheap recycled waste material, could these films be sold so cheaply?