Because Dahua and Haikang have different ball machine brackets and different installation methods, Dahua's ball machine bracket is installed on the side and Haikang's is installed below, and the video compression method is also different. Dahua's name is CVI and Haikang's name is TVI, so it can't be used universally.

The word "Scaffold" is translated from the English word "scaffold" and also translated as "scaffold". It was originally a term in the construction industry, especially the temporary support set up when building a building, which will be removed with the completion of the building.