1. Ventilation: When the indoor air humidity of the fireworks warehouse is higher than the outdoor air humidity, it is necessary to open the doors and windows of the fireworks warehouse to ventilate the warehouse, which can reduce the air humidity in the warehouse.

2, airtight: this situation is when it rains or when the outdoor air humidity is higher than the fireworks warehouse air humidity.

3. Dehumidification: There are two ways to dehumidify. One is to absorb water with quicklime, charcoal or calcium chloride. Calcium chloride absorbs water by its own moisture absorption characteristics, so that calcium chloride directly contacts the air in the warehouse to achieve the purpose of moisture absorption. Fireworks are also called fireworks, fireworks, fireworks and firecrackers. According to "China Fireworks and Firecrackers Standard-Safety and Quality", fireworks and firecrackers are defined as entertainment products that use pyrotechnics as raw materials and produce acousto-optic colors. Working people in China invented it earlier, and it is often used for grand ceremonies or performances.