... C, Life span, no rusting within 30 years.Solar panel: A, Solar panel, amorphous silicone,mono-crystalline silicone,poly-crystaline ... sillicone.B, Mono-crystalline and poly-crystalline solar panel's Characteristic, conversion efficiency is high(15—19%),the ... duration without sunshine 5 times longer than regular solar garden light, solar garden light can work 25 rainy days , realize ...