Quote from Christian Nissen on 2022-01-03, 16:17

Is the software company behind the Android and IOS-apps SmartLiving and Tuya Smart.

They make the basic software of the apps and provide API/SDK´s for Tuyas customers that wants to tweak the standard product with their own functions, for their own hardware. Usually because Tuya does not provide a specific product. Qlima airconditioners and heatpumps is one example.