1.3.6. The purpose of this study was to report repair machinery repair system, through the website online in the company air conditioner disease Las limited.1.3.7 sample group is company limited, air of class number 50 people.1.3.8 place data collection is the company air conditioner disease Las limited.1.3.9 period starting on October 19 2558 - 22 February 2559.
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