In the past 5 years, revenue has increased for 4 years except 2020. The average growth rate is 13%, the average operating profit growth rate is 12.7, and net profit fluctuates greatly due to income tax fluctuations, with an average growth rate of 8.6%. The gross margin increased slightly from 30.3% to 31.7% in the past 5 years, and the return on net assets fell from 15.4% to 10.3%.