From January to April 2015, the profit margin of main business of sewing machinery manufacturing industry in China was 5.27%, up -0.01% year on year. From January to February, the cumulative profit margin of main business income was 4.52%, with year-on-year growth of -1.22%. From January to march, the cumulative profit margin of main business income was 4.74%, up by -0.89% year on year. From January to April, the cumulative profit margin of main business income was 5.27%, up -0.01% year on year.