1. According to incomplete statistics, the average gross profit margin of manufacturing industry is 15% to 25%. China's manufacturing industry, as a pillar industry of the country, has maintained a good development trend, but the road of traditional manufacturing industry relying on human resources has become narrower and narrower, so the profit rate of different types of manufacturing industry is different in terms of gross profit accounting methods and market demand.

2. It depends on the industry, technology content and other related factors. For example, there is a big difference between mechanical manufacturing and electronic product manufacturing. The proportion of raw materials for machinery manufacturing is relatively large, while the proportion of raw materials for electronic products manufacturing is relatively small. For example, the after-tax gross profit margin of bulk wholesale industry is reasonable at 15%-20%; The after-tax gross profit margin of conventional manufacturing industry is around 30%; It is reasonable that the after-tax gross profit margin of retail industry is around 45%; After-tax gross profit margin exceeds 60%, which belongs to profiteering industry.