knowledge expansion: Chinese chestnuts can now be fried by machine. After sugar frying, the color of Chinese chestnuts is golden, which releases the aroma of Chinese chestnuts to the maximum extent and keeps the nutrients from losing. After peeling and grading, it enters the refrigerator for cold storage. When the chestnut kernel is to be processed, it will enter the production process as a raw material, and it can be put into storage for sale after delivery, thawing, selection, weighing and bagging, secondary weighing, inflatable sealing, secondary sealing, high-temperature sterilization, drying, out-of-pot detection and finished product packaging. Small package of sweet chestnut kernel adopts a new technology of nitrogen filling to keep fresh, which not only fully retains the unique taste of JD.COM chestnut, but also does not add any pigments and preservatives, so it is a natural green food.