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Instead of gas and coal heating,a new green fast and energy saving heating way turns up.It is high efficiency Electromagnetic induction heating. Inductive heating technology came to China in 1956, introduced from the  Soviet Union,and used in the automotive industry mainly. Duolin founded in 1994,named by Founder of Mr Zengxiaolin and his wife,Mr Zeng researched out first IGBT solid states induction heating machine and Mrs Zeng for sale,the company like their baby,then grow up as more than 200 employees team,sale centers in more than ten provinces in China.In 2007,international sales center founded,Duolin opened the foreign market.