轻轻一撕．简单一包．便可保持食物的新鲜．作为时新、美妙的厨房用具之一．轻薄透明的保鲜膜为保存食物带来极大的便利．成为很多家庭主妇离不开的“帮手”。其实．食品保鲜材料有很多,像塑料板材．瓦楞纸板．金属板材等．这些属于硬材．而保鲜膜属于软材。此外还有保鲜剂。和硬材相比．用保鲜膜给食物保鲜更节省空间．而且不受食物形状的限制．价格也很便宜．所以很容 Gently tear. Simple package. Can keep food fresh. As one of the new, wonderful kitchen appliances. Thin transparent plastic wrap to save food brought great convenience. Become a lot of housewives can not do without “helper.” in fact. There are many food preservation materials, like plastic sheeting. Corrugated cardboard. Metal plates and so on. These are hard materials. The plastic wrap is soft. In addition there are preservatives. Compared with hard materials. Use plastic wrap to save more food space. And not limited by the shape of the food. The price is also very cheap. So very accommodating