Aluminum alloy windows and doors, refers to the use of aluminum alloy extruded profiles as frames, mullions, fans for the production of windows and doors called aluminum alloy windows and doors referred to as aluminum windows and doors. Aluminum alloy windows and doors include aluminum alloy as stress members (members that bear and transfer dead weight and load) and wood-plastic composite windows and doors, referred to as aluminum-wood composite windows and doors, aluminum-plastic co......