... of fresh chestnuts from Tangshan, Special advantages of geography and climate in Tangshan make chestnuts have unique features. Roasted ... , vacuumizing, filling Nitrogen, sealing, killing bacteria with high temperature and high press. The whole process is executed under total enclosed ... ) Rich in starch, protein, fat, vitamin A,B,C and mineral substance, such as calcium, phosphorus, potassium, etc.3) ...