The herbal medicine company products include nearly 400 kinds of new drugs of class I, II and III and classic Chinese patent drug, involving nearly 300 varieties. At the same time, it has a production base of traditional Chinese herbal pieces of more than 133,000 square meters, a warehouse of more than 12,000 square meters.

1. There is no enough ventilation in the warehouse. In the rainy season, hot and humid, there are a large number of mold spores in the air. They grow and reproduce rapidly under appropriate temperature and humidity, which leads to deterioration of herbal medicine with reduced or lost curative effect.
2. After the traditional herbal medicine turns moldy, its composition and efficacy will change, not only have no curative effect, but also cause harm to people's body. In serious cases, it may lead to poisoning.

1. The herbal medicine company has three warehouses, each with an area of more than 4,000 square meters. On average, each warehouse is equipped with 3 sets of Vanse Eagle big ceiling fans with the diameter of 24 feet. In total there are 12 sets.
2. During operation, the big ceiling fan can push a large amount of air flow to the ground, forming a certain height of horizontal movement of the air flow layer on the ground, so as to promote the overall air circulation in the warehouse, exchange indoor moisture with outdoor fresh air, and play the function of dehumidification and mildew prevention.