Q3 2018Q2 2018Q1 2018Q4 2017Q3 2017
Gross margin41.7%42.1%39.8%36.3%37.0%
Gross margin growth (bps)464387262253201
Operating margin5.1%4.8%3.2%3.5%0.6%
Operating margin growth (bps)45142711665-19
Net profit margin6.6%5.6%3.8%3.1%0.8%
Net profit margin growth (bps)57939996136-96