Advantages: At present, some problems in usage of acidifier: (1) instability of effect. (2) fast release and absorb totally in stomach, do not arrive at intestin and take effect in feed production. (3) more adding and cost. (4) corrode mechanical and transport equipment. Tiger I acidifier which based on special technology is mixed with organic acids and its salts, compare with other common acidifier, advantages as follows: 1. Organic acids and its salts formed a buffer system, which can delay buffer in gastric intestinal, reduce adsorption in gastric and most of it arriving at hind gut and take the antibacterial effect; and its cost is less than coated acidifier. 2. Compared with signal organic acid, acid-salt buffer system can reduce inhibition of gastric acid secretion; promoting growth of gastric intestinal. 3. The content of effective components can be measured by certain method, ensure the stability of quality. Mechanism: Common acidifier is only the physical mixture, but tiger acidifier is the mixture of physical and chemical, and it is acid-salt compound acidifier, mechanism on animals as follow: In the low PH environment of pre-gastrointestinal, most of common organic acids are not dissociation and exist as uncharged molecules; adsorbed rapidly in gastrointestinal tract. Organic acids-salts show as negative charged ions and uneasily through neutral lipid bilayer of epithelium in gastrointestinal tract, delay adsorption and most of it can arrive at meta-intestinal; because of negative charged, it combine with hydrogen ion of gastric acid to reduce acidified effect. Tiger I , hydrogen bonds can be combined with carbonyl oxygen of small molecular organic acid-salts like formate and hydrogen of hydroxyl, formed a buffer system and slow down the adsorption of organic acids in the gastrointestinal tact; that means organic acids molecules make formate acid as carrier and most of arrive in hind intestinal. In the hind intestinal, organic acids and their salts buffer release hydrogen ions in the environment of High PH, and play the effect of antibacterial with organic acid anion. Composition: lactic acid, formic acid, critic acid, potassium lactate, potassium formate, potassium citrate. Main function: 1.Play a role in gastrointestinal tract,effective suppression of escherichia coli and growth promoting of piglet; especially overcome the digestive disorder of the piglet after its early weaning, and reduce the rate of diarrhea. 2.Reduce PH, enhance the secretion of digestive enzymes in intestinal tract; improve the the ration of daily feed and feed conversion. 3.Cationic is involved in maintaining the balance of electrolyte in vivo. 4.Effectively suppress harmful bacteria of feed and extend the storage time of feed. 5.Collaborative effect with minerals such as probiotics, prebiotics and plant exreacts, promote the the adsorption of elements.