1, glass material: European windows are mostly tempered glass, and lightning plate windows are mostly LOW-E glass. Tempered glass is a kind of glass commonly used in doors and windows. Its impact resistance is 5 to 10 times that of LOW-E glass, and its bending resistance is 3 to 5 times that of LOW-E glass. It does not hurt people when broken, and has excellent wind pressure resistance, cold and heat resistance and impact resistance.

2. Warranty period: 5 years for European metal doors and windows, and 2 years for lightning plate doors and windows. Oupai is the first listed company with a market value of over 100 billion in China custom home furnishing industry. It started as a whole cabinet and extended its business to many fields. Now it has become a comprehensive modern integrated home service provider.