Designed into column type mini structure,installed in any direction,provided with safety,protection performance Feartures: 1,Small volume,light weight:It is only 1/4and 1/5 of the weight and volume of the outdated products resdeotively. 2,Low loss:With the actual loss than 0.1,little radiation,low temperature rise,and good energy conservation effect. 3,Excellent self-healing performance:when a ...