"The helicopter is regarded as an important weapon for the country's mechanized national defense system as well as for its land forces," Xinhua news agency said.
The WZ-10, the country's most advanced attack helicopter, first captured public attention in July when reports surfaced that it used pirated US technology.
Yang Yujun, a defense ministry spokesman, denied the reports.
"China's attack helicopters and their engines are all home-developed and have proprietary intellectual property rights," he said.
"The public appearance of the WZ-10 proved that to be true," Wu Ximing, designer of the helicopter, said at the show.
He said the WZ-10 pushed the vanguard of China's helicopter industry forward 15 years to top world-level standards.
The Chinese-designed Wing Loong unmanned plane was another attraction at the Zhuhai show. The Wing Loong has a maximum takeoff weight of over 1,000 kilograms, which can carry two missiles with a flight time of 20 hours.
"The drone can scout and conduct attack missions simultaneously," said Fang Yuanpeng, a researcher with the Chengdu division of the Aviation Industry Corp of China (AVIC), which developed the drone.
Landmark building should respect the public's feeling