Walnut is an important economic forest tree species in China and one of the four famous dry fruits in the world. China has a long history of walnut cultivation and is one of the origins of walnuts in the world. Over the years of cultivation and evolution, it has produced very rich germplasm resources. In recent years, China's walnut industry has developed rapidly, and its walnut production has ranked first in the world. In 2021, China's walnut production will reach 5.4035 million tons, a year-on-year increase of 12.67%. Henan alchemy food co., ltd walnut export volume has increased dozens of times in the past few years.