There is a glass electric kettle in the market, which has a glass kettle body, a metal heating plate and a silicone ring at the bottom. The water boiled in this kettle is metal water and glue. If the heating plate is made of high manganese steel, there is a danger of manganese pollution, which is very unhealthy. The advantages of this kettle are high power and fast cooking speed. The other is all glass, and the bottom is also glass. There are no metal rings and silicone rings to ensure the purity of water. The disadvantages of this all-glass pot are low power and slow heating speed. Representative brands are: Wandiwang and Jiabu.