At present, the oven liner is generally enamel, which is non-radioactive, pollution-free, residue-free, easy to clean and contains no harmful substances. There are several kinds of liner materials: galvanized steel plate, which is the most used material in the domestic oven market at present. The best liner is a high-temperature self-cleaning ceramic liner, followed by a common ceramic liner. Stainless steel and galvanized aluminum plates are worse than ceramic liners, and of course the price may be cheaper.
Matters needing attention and key points of oven:
Whether the temperature control is accurate or not should be the primary factor in choosing an oven. The temperature difference should be accurate to at least 5℃ above and below, which directly determines the quality of your finished product. Do not underestimate the accuracy of time control. If you don't pay attention, it is very likely that a batch of perfect biscuits will change from Asians to Africans because they have been baked for 1-2 minutes.
The capacity of the oven depends on your purpose. Ovens under 20L are suitable for general barbecues and roasted vegetables at home, but the capacity is small and the firepower is concentrated. Note that the food is burnt before it is cooked. It is recommended to buy more than 35L. If you pay attention to quality or business, buy a larger capacity. Bending heating tube is better than straight heating tube, with larger heat dissipation area and more uniform heating of baked goods; Generally speaking, timely heating pipes have short service life and are easy to be damaged.
Refer to the above content: Baidu Encyclopedia-Oven