After years of accumulation and practice, Yonfer has established an agrochemical service model covering the whole growth cycle of crops and formed a "pyramid system of technical services". Composed of scientific research experts from more than 20 universities, scientific research institutes and Yonfer, the top layer of the tower is serving as the guidance and top architecture of the agroservice; the middle layer is composed of more than 200 professional and technical service talents and primary-level experts from local agricultural technology departments, guiding the implementation of technical services; The foundation of the pyramid is a team jointly built by more than 800 promoters of Yonfer, new farmers, large growers, providing services in the field all the year round and closely linking service innovation with the production and life of farmers. Yonfer's technical service not only covers the management of the whole growth cycle of crops, but also involves seeds, pesticides and fertilization, etc. The company also compiles a series of agricultural technology service manuals to guide farmers in detail what to do, how to do and what standards to achieve for different crops at each time node, and strengthens the innovation of "technology + marketing" service mode, comprehensively implements the "four person group operation mode" which is composed of professional technical service personnel and promoters , and assigns technical service personnel to serve different regions, focusing on technical guidance and product after-sales service for growers.