The introduce lightning how to form

the law of lightning and endanger

impracticable electricity （light） road of cabled yarn is prevented strike of thunderbolt install method and standard

as well as guard against that in thunder installation project construction

the correct operation and measure that should be adopted stipulate specific requirement

make mere figurehead the electrical （light） transmission quality of cable correspondence for rising to ensure equipment and the safety of people

maintain correspondence unblocked dozen takes off solid foundation.