... brand with good quality)8. Accessories: all parts are made of aluminum alloy and stainless steel9.Advantages:1) Shape luxury, ... ) Double glasses,perfect thermal-insulating and sound-insulating.5) Surface of aluminium alloy processing is imitation wood grain , fireproofing ,dampproof , ... convenience,no noise.7) Guard against theft , security. some corners of the window: factory of aluminium window