Gelonghui, April 16 | Runbei Aviation Technology (001316.SZ) said at an investor relations event that the gross margin of the company's distribution business is relatively stable, and the gross profit margin of different aviation material models fluctuates between 20% and 30%; in terms of self-development business, the gross margin level is high due to the small scale of revenue and product variety in the early period. As the scale of sales increases and market share expands, gross margin will remain stable after a limited decline.