In the world's tungsten capital - Ganzhou, there is a modern technological enterprise (Ganzhou Dachang Air Conditioning Equipment Engineering Co., Ltd.). Adhering to the spirit of excellence, Dachang Company enjoys first-class brand advantages and equipment advantages. It has taken the lead in the same industry by achieving scientific management, large-scale production, standardized products, advanced research and development, networked sales and systematized services. The company mainly focuses on refrigeration industry, constant temperature and humidity field, multi-functional vacuum archive pest control and sterilization disinfection machines, vacuum nitrogen-filled archive pest control and sterilization equipment, vacuum freezing drying equipment, low-temperature freezing archive pest control warehouse, fruit and vegetable vacuum pre-cooling and preservation machines, freeze-dryers, etc. equipment.