Is there a company specializing in smart home (light control) in Shantou? Which is better?

It is best to find a big manufacturer to do intelligent control. I'll give you two suggestions. One is Crestron, an American brand. The control of environment, lighting, video and video recording is very good. Good quality, stable system, programming according to your own needs and usage habits. Belonging to high-end intelligent control. Only the price is higher. The second is Leviathan. The same American brand, the lighting control can be considered first-class, and the price is cheaper than Crestron. But other aspects of control are not as superior as Crestron. Personal advice, for reference only.