Time: 01:51CR - energetics - solar photovoltaic panels
Time: 01:44CR - Prague - National Theater - technology - photovoltaic panels - engine room - heating
Time: 07:53CR - industry - Orbit Merret - digital sensor - panel - measuring device - converter - soldering
Time: 08:44CZ - Nymburk - technology - photo voltaic - solar panel - battery - electricity