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Dust-Off is a brand of dust cleaner ( refrigerant-based propellant cleaner , which is not compressed air and incorrectly called " canned air " ) containing difluoroethane ; it is used to remove particulates and dust from computers and electronic equipment .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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