Acidifier A_1 &A_2 were both composed with phosphorus acid(40%~50%), lactic Acid, citric acid, fumaric acid, cider acid, tartaric acid and excipient.

• 复合酸A_1和复合酸A_2是由磷酸、乳酸、柠檬酸、延胡索酸、苹果酸、酒石酸和赋形剂组成。