Manufacture of plastic products; sale of plastic products; manufacture of luggage; sale of luggage; production of Class I medical devices; sale of Class I medical devices; manufacture of computer software, hardware and peripheral equipment; retail of computer software, hardware and auxiliary equipment; manufacture of hardware products; wholesale of hardware products; sale of metal products; manufacture of metal chains and other metal products; development of artificial intelligence application software; manufacture of wearable smart devices; sale of wearable smart devices; sale of smart vehicle equipment; manufacture of smart vehicle equipment; manufacture of IoT equipment; sale of IoT equipment; manufacture of smart home consumer equipment; sale of smart home consumer equipment; manufacture of pneumatic and electric tools; sale of pneumatic and electric tools; manufacture of household items; sale of household items; manufacture of hand carts and animal-drawn vehicles; sale of hand carts and animal-drawn vehicles. Licensed items: import and export of goods; import and export of technology.