The uni-pole(UCL) of LEEYOUNG Ind. Co., Ltd. which is the 
standard length 6,000mm and the contact surface of 'V' shape
copper is stable with the collector brush. Also, the UCL is
available to apply at narrow space, high speed(400m/min.) 
and minimum radius-300mm of curved line.
Additionally, this is suitable to apply complicated
test systems which are necessary different voltage 
even though one line system.
A typical example, there are EMS(Electronic Monorail system),
 RGV(Rail Guided Vehicle), Slipring of crane, equipments of
 amusement park and so on.