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  • Fruit and vegetable preservation and cold storage device utility model patent
  • Cold storage temperature and humidity monitoring device utility model patent
  • Patent for refrigerated truck card slot
  • Patent for barrel pump used in refrigeration equipment
  • Patent for heat fluoride defrosting refrigeration system
  • Patent for shelves and pipes used in cold storage
  • Class A qualification of cold storage installation
  • Level three qualification of mechanical and electrical equipment installation engineering contractor
  • GC2 pressure pipe installation qualification
  • China refrigeration and air conditioning equipment maintenance and installation qualification