... : 0.98 ~ 0.93Concentration of tomato sauce (according to the analysis of light meter): 18% -30%4. Processing methodsCanned food ... vacuum sealing, sterilizing, insulating, then can be put into the shelf5.Way to eatopen cans and ready-to-eat6. Packagingsealed ... pizza, burgers, soup, etc.; also applies to the seasoning in the cooking process, such as the production of tomato beef, fish, fried rice ...