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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
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Patent for barrel pump used in refrigeration equipment -
Patent for heat fluoride defrosting refrigeration system -
Patent for shelves and pipes used in cold storage
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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
