Although many people nowadays know that it is best not to move in immediately after the renovation of the new home, you need to dry for six months, to keep the windows open and ventilated. But many people are afraid of trouble, drying a few days can not wait to move into a new home. Experts pointed out that after home renovation, it is best to open the windows after six months of ventilation before moving in, in order to prevent formaldehyde, benzene and other causes of toxic hepatitis. Shandong Provincial Hospital Hepatology Deputy Chief Physician Korea Qing said, toxic hepatitis is caused by chemical poisons, drugs or biological toxins caused by hepatitis. Prolonged or excessive use of certain drugs that have toxic side effects on the liver, such as certain antipyretic and analgesic drugs, narcotic drugs, or prolonged and massive exposure to toxic substances such as benzene and formaldehyde, can cause toxic hepatitis. Nowadays, formaldehyde, benzene and other toxic substances are often present in the decoration and building materials, which have obvious toxicity to liver cells and lead to liver cell damage. If the amount of exposure to formaldehyde, benzene, etc., long time, in one to two weeks there will be nausea, vomiting, abdominal pain, eye color and urine eye color yellow acute toxic hepatitis symptoms. Korea Qing said, in Shandong Provincial Hospital by formaldehyde and other toxic hepatitis cases have not been broken, only last month there were two cases. One of the female patients to move to a new home before the ventilation is not open windows, moving to a new home after a week will suffer from toxic hepatitis. Now home improvement materials have publicized their own environmental protection, zero formaldehyde, but its quality varies, the actual role is difficult to define. Experts say, the best way or not a renovation will move in, if you are afraid of theft or window glass damage and do not dare to keep the windows open for a long time, you can regularly open the windows for a few hours, in order to maximize the removal of formaldehyde in the air.