The advantage of aluminum pot is uniform heating, but the disadvantage is that aluminum intake may cause Alzheimer's disease; The surface of black crystal non-stick pan is coated to ensure non-stick and easy to clean, but it is easy to crack and age, which is harmful to health and may cause cancer. In fact, the traditional stainless steel pot is safe and durable, but it is easy to stick to the pot. Recommended ceramic thick kettle.