AVIC I was mainly focused on large planes, while AVIC II was mainly focused on smaller planes, such as trainers (JL-8, utility aircraft (licensed version of Cessna 208 Caravan), L-15, and CJ-6), small passenger airliners (Harbin Y-12), medium range transport aircraft (Y-8), and helicopters (Z-8, Z-9, WZ-10 and Z-11).
AVIC I concentrated on large planes, whereas AVIC II was primarily involved with smaller models such as trainers (JL-8), utility aircraft (licensed version of Cessna 208 Caravan), L-15, CJ-6), small passenger airliners (Harbin Y-12), medium range transport aircraft (Y-8), and helicopters (Z-8, Z-9, WZ-10, and Z-11).