... 1.Baoding Tenghui Opto-electronics Technology Co.,Ltd,is located at "China Electric Valley",Baoding City,Hebei Province(next to Beijing). 2 ... :16W 12v,PC materialThe pannel: polycrystalline silicon,50W, Brand is China YingliBattery:specilized for solar,65AHController:time-control,over-current,over ...