China's paper walnut origin mainly in Yunnan and Xinjiang, due to climate and soil quality and other reasons, Xinjiang paper walnut yield and quality is slightly higher than the Yunnan variety.

The paper walnut is mostly thin-skinned walnuts for many years after the development of new varieties of breeding, categories are much less than thin-skinned walnuts, the most planted paper walnuts are Xinfeng and 185 two varieties, but Xinfeng varieties of some of the products do not reach the paper standard.

Xinfeng: featured early results, the second year can be a small number of fruits, a small amount of water and fertilizer conditions, three years can produce fruit 1 ~ 3 jin, 5 years that is into full fruit. The variety for the spike results, 5 years after the mu yield up to 1000 pounds or so, is currently the only mu yield can be more than a thousand pounds of varieties. But the average shell thickness of 0.8mm, resulting in some products can not reach the standard of paper walnut.

185: the latest cultivation of paper walnut varieties, with Xinjiang Aksu Wensu County products of the highest quality, named Wen 185 paper walnut, has been declared by the Wensu County Government of the national qualification of special agricultural products, and by the Ministry of Agriculture for the record. In addition to the other 185 walnuts outside of Wensu County can also meet the standard of paper walnut, but the yield and kernel yield is slightly insufficient. This variety is characterized by good quality, thin skin, the average shell thickness of only 0.6mm, per hundred pounds of kernel rate of up to 70% or more, is currently the only kernel rate can be more than 70% of the walnut varieties, is the Xinfeng walnuts 1.5 times, in full compliance with the WTO on the requirements of the special grade walnut. Due to the short promotion time, planting conditions and other reasons, the current market 185 paper walnut is not common.