Wirat, reserve and flora pimon stem Kano (2545 (2002): 6). the said customer satisfaction compared to the performance of the products purchased with what the expected level of customer expectation may be obtained from the use of the item or experience. Chokechai chayotwat (2547 (2004): 143-144), the meaning of contentment that results from a comparison between the operation of the product, with expectations.
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