Various kites are shown at the 2015 Weifang International Kite Festival in April. [Ju Chuanjiang/China Daily]

Her factory hires 50 workers, all local farmers, in its busy season, which lasts from November through May, and about 30 workers the rest of the year. It produces 10,000 kites at most daily during the busy season, Sun said.

"The busy season of kite manufacturing happens to be the off-season on the farm," she said.

Sun said the factory earned revenue of 2 billion yuan for the 12-month's ending May 2015, increasing from 1.5 million yuan a year earlier.

"People are increasingly interested in outdoor sports", she said "Flying kites combines Chinese traditional handicraft and outdoor sport trends popular in the West."

She added that the designs of her kites are mostly traditional themes, such as goldfish and swallows, to avoid copyright disputes. The factory also makes customized kites and blank kites so customers can add their own designs.