The solar panels in our catalogue comply with the highest standards in the market. They have been manufactured in mono and polycrystalline using top quality materials (also available thin film - CIS). They also have certifications CE, IEC, TUV and ISO (depending on model). The cells are encapsulated with EVA and TPT, the frame is made of anodized aluminum and the glass is tempered and microstructured of high transmission. The warranty given on manufacturing issues is for 2 years and there is 90% performance warranty for 10 years and 80% performance warranty for 25 years.