Ganzhou Dachang Air Conditioning Equipment Engineering Co., Ltd. has gone through ups and downs since its establishment in 2003. It has continued to devote its efforts to the field of equipment research and development and invested a lot of manpower and material resources. Thanks to the joint efforts of all employees, the company has made significant progress in vacuum equipment production technology, and has won high praise from industry peers and customers. Here, Ganzhou Dachang Air Conditioning Equipment Engineering Co., Ltd. solemnly promises that we will live up to expectations and continue to provide customers with excellent products and services.

　　The following is an overview of the research and development process of some of the company's key equipment (Note: The right to interpret all equipment-related information belongs to Ganzhou Dachang Air-conditioning Equipment Engineering Co., Ltd.):

　　In March 2013, the vacuum pre-cooling machine was successfully developed.

　　In April 2013, a vacuum pre-cooling machine specially designed for vegetables was launched.

　　In May 2013, the vacuum cooler was further developed.

　　In June 2013, a vacuum pre-cooling machine was launched for the cooked food market.

　　In August 2014, we successfully developed an archive insecticide machine and a vacuum nitrogen-filled insecticide, sterilization and disinfection machine.

　　In September 2014, low-temperature freezing disinfection cabinets and large-scale intelligent low-temperature freezing insecticidal ozone disinfection machines were launched.

　　In December 2014, a fully automatic file disinfection room was successfully built.

　　In September 2015, a low-temperature and high-humidity thawing machine was developed.

　　In May 2016, a vacuum odor removal machine was launched.

　　In June 2016, a freeze-drying machine was developed for the fields of food, fruits, vegetables, and medicine, and at the same time, it launched insecticide and disinfection equipment for archives, cultural relics, books, and ancient books.

　　In April 2017, we successfully developed a workbench for copying and restoring archival cultural relics, ancient books, calligraphy and paintings.

　　In May 2017, a multi-functional archive, cultural relic, book and ancient book restoration table was launched.

　　In June 2017, we successfully built a mounting, flattening, drying and repairing machine for archival cultural relics and books.

　　In August 2017, dust removal, disinfection and purification equipment was developed.

　　In September 2018, a low-oxygen regulated insecticide storage system was launched.

　　In October 2018, ultra-high pressure sterilization equipment was successfully developed.