there are 25 cast-iron pot enterprises and 36 supporting enterprises in jia county, Henan province, covering more than 5 varieties and more than 58 specifications of high, medium and low-grade iron pots. The annual output of cast iron pots is more than 7 million, accounting for more than two-thirds of the national total, and the output value is nearly 3 billion yuan, accounting for 65% of the same industry in the country, forming a relatively complete industrial chain with iron pot research and development, casting, testing and sales. Jia county's cast iron pan industry has distinctive features and outstanding advantages. It has undergone seven technological innovations and now has the most advanced technological process in China. At present, there are more than 1 independent brands such as Huawei, Winbond, Zhongshuai, Meiyi and Shenghua.