The story
The 1st factory opened in 1952 to repair aircraft and situated on the former site of the Manchuria Airplane Manufacturing Company (Manshū/Mansyuu) factory. In 1958, it began producing licensed copies of Soviet aircraft. It produced the Z-5, the Mil Mi-4 helicopter, and the H-5 light bomber — a copy of the Ilyushin Il-28.
It then produced the Harbin Y-11 a light twin-engined utility aircraft — an aircraft of its own design and not a licensed copy. The Harbin Y-12 which followed, while similar to the Y-11, was a largely new aircraft.
The most recent and important product is the Z-20 utility helicopter designed and built for the Chinese military.
From Wikipedia’s article on Harbin Aircraft Industry Group, shared under CC BY-SA 4.0.4