VITAMIN A, VITAMIN B, VITAMIN C AND VITAMIN D ARE ABUNDANT IN THE CANTEENS, CONTAINING A LARGE AMOUNT OF ANTIDEHYDE ACID, VITAMIN C IN A CANTEEN IS 1.5 TIMES THE RECOMMENDED DAILY INTAKE OF VITAMIN C AND VITAMIN E IS MORE THAN 10 PER CENT OF THE RECOMMENDED DAILY INTAKE. IN ADDITION, THE CANTEENS CONTAIN CARROTS, LARGE AMOUNTS OF FOOD FIBRE AND MOISTURE. 1. VEGETABLES CONTAIN A LARGE AMOUNT OF ANTI-FASCIC ACID VITAMIN C, WHICH INCREASES THE IMMUNE CAPACITY OF THE BODY, PROMOTES THE ABSORPTION OF THE IRON, AND SERVES TO AWAKEN THE BRAIN AND RELIEVE FATIGUE. A LARGE AMOUNT OF EDIBLE CELLULOSE IS FOUND IN THE CHOLESTEROL, WHICH EFFECTIVELY PROMOTES GASTROINTESTINAL CREEPING AND PROMOTES THE RELEASE OF EXCESS CHOLESTEROL FROM THE BLOOD, WHICH CAN BE USED TO PREVENT CONSTIPATION, WHICH CAN BE CONSUMED BY CUSTOMARY CONSTIPATORS. 3. VITAMIN A IS ABUNDANT IN THE CUISINE. VITAMIN A IS EFFECTIVE IN PREVENTING NIGHT BLINDNESS, PREVENTING LOSS OF VISION AND TREATING VARIOUS EYE DISEASES。