Q2 2019Q1 2019Q4 2018Q3 2018Q2 2018
Gross margin21.4%21.7%23.5%22.2%21.7%
Gross margin growth (bps)-32326921-32
Operating margin-7.5%0.1%-4.1%0.3%0.3%
Operating margin growth (bps)-78317-529-91-74
Net profit margin-6.6%4.0%14.2%1.5%3.2%
Net profit margin growth (bps)-9825371,458125293