On average, employees in Maineville, OH at SUMCO give their company a 4.0 rating out of 5.0 based on 1, whereas overall Average Rating of SUMCO is 4.5 out of 5.0 based on 11 SUMCO Review Ratings. The happiest SUMCO employees in Maineville, OH are Maintenance Supervisors submitting an average rating of 3.8.
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