Individual merchants want to assemble surveillance cameras. Where is the right place to buy goods?

There are still many surveillance cameras in Shenzhen. Of course, Shenzhen is more suitable for purchasing goods. IT is recommended to check the relevant information and contact information of the surveillance camera on the security or IT website. It's better to find a factory agent. I know the good brands of domestic surveillance cameras: Haikang, Netscape Worry-Free and Tianshida are all good brands. Netscape Worry-Free and Tianshida are all brands in Shenzhen.