The old-fashioned wok has a layer of wax.

Prevent rust. Old-fashioned raw wok has a layer of wax. Spray wax before use to avoid contact with air and prevent rust. It should be cleaned before use. Iron pot is a traditional kitchen appliance for cooking food. Generally, it does not contain toxic substances, but it is often oxidized in water. The main varieties of iron pots are printing pots, ear pots, flat pots, oil pots and pancake pots. The main component is iron, but also contains a small amount of sulfur, phosphorus, manganese, silicon, carbon and so on.