The North American electrical appliance ACA I use really heats up faster than Changhuang. The quality is also good. Domestic products can only be said to be cost-effective. Opinions vary. The material inside the oven is more important. Enamel liner or stainless steel oven should not be too small. North American ovens with uneven heating should have a temperature of at least 20 liters. Because the internal rack of the oven is divided into three layers: upper, middle and lower. Maybe the salesman will tell you that you can bake food on the third floor, which is enough for your family. That was not the case. Because different foods are baked in different places. When baking a food, the food can only be placed left and right, not up and down. What size baking tray can be placed horizontally?