Usage 1. Food industry. Mainly used for food, beverage as sour agent and taste regulator. 2. The cosmetics industry: can nourish skin, keep wet agent, update, PH regulator, acne, to ChiGou agent. 3. Pesticide industry: lactic acid high biological activity of soil and crop, non-toxic, can be used in the production of new pesticide, environmental protection. 4. The tobacco industry: moderate join lactic acid, can improve the quality of tobacco, and maintain the humidity of tobacco. 5. Other industries: besides above purposes, lactic acid is used to produce biodegradable plastics, poly lactic acid and green solvent - lactic acid methyl ethyl lactate, etc.