Where did the documents received from Longhua Babu, Qianhai Free Trade Port Zone, Shenzhen City, Guangzhou Province come from?

Dongguan, Huizhou, Guangzhou. According to relevant information, many goods from the Qianhai Comprehensive Free Trade Zone in Shenzhen City, Guangzhou Province come from other cities in the Guangdong-Hong Kong-Macao Greater Bay Area such as Dongguan, Huizhou and Guangzhou. A bonded port area refers to a special customs supervision area approved by the State Council and established in a country's port port area open to the outside world and a specific area connected to it, with port, logistics, processing and other functions.