What are the requirements for the thickness of the protective tube for galvanized steel pipes used for protection of buried cables? What is it? The design is not clear
HDMI, audio and video HD transmission line, the best choice, now connected to the TV with HDMI cable, can directly transmit audio and video, VGA, then only the transmission of video, but if you are using desktop TV, then, like desktop no HDMI Output interface, you have to connect the VGA cable and then connect the oh oh.
These pipes are generally very small in diameter and have a larger number of pipes
What are the requirements for the laying of cables in the pipe laying pipe pipe, asbestos cement pipe or concrete pipe, pipe must be smooth inside
