1. CuttingCutting is the first process in the production of aluminum alloy doors and windows. The cutting machinery is mainly used to accurately cut the length of the material according to the design requirements. The cutting material size should be controlled within 2mm, otherwise the sealing quality of doors and windows will be difficult to guarantee. Generally speaking, 90 degree cutting should be used for sliding doors and windows; 45 degree cutting should be used for casement doors and win......