Nylon 66 is a cost-effective engineering plastic with high mechanical properties. However, nylon 66 is a synthetic organic polymer material that has inherent properties of polymer materials, such as creep. What is creep? It is the phenomenon that the deformation of nylon 66 increases with time under a certain stress. Nylon 66 without glass fiber reinforcement cannot be made into nylon heat insulation strips. The increase in glass fiber will increase the mechanical properties of the material by leaps and bounds. The weight of aluminum and wind pressure will not cause the doors and windows to deform, and the consequences will be disastrous. . After our test, the results show that only glass fiber reinforced nylon can meet this difficult task, so why do we have to choose 25% glass fiber reinforced nylon 66? This is because only 25% glass fiber reinforced nylon has the best performance and a more beautiful surface.