No Potential Induced Degradation. No Light Induced Degradation. Adsence of Hot Spot. No Snail Track Problem. Rare existence of solder joint ( as compared with hundreds of solder joint for c-SI ). No glint / glare problem. Low shadow effect ( which affects electricity yield ) does not induce hot spot issue. Lead (Pb) free, Cadium (Cd) free , RoHS compliant. Having positive light soaking effect.