The procurement of aluminum profiles involves a wide range of products, and there are many manufacturers of aluminum profiles in the market. Generally, aluminum profiles are divided into two types, one is industrial aluminum profiles, and the other is building aluminum profiles for doors and windows. Industrial aluminum profiles are divided into standard aluminum profiles and special-shaped aluminum profiles. Door and window building aluminum profiles are generally made by specialized aluminum companies. In industrial aluminum profiles, there are generally large factories that make standard aluminum profiles. Industrial aluminum profiles refer to assembly line aluminum profiles, which are used by assembly line operation platforms. Special-shaped aluminum profiles refer to the processing of custom-made aluminum profiles. There are tens of thousands of such factories across the country in conservative numbers. How to distinguish the quality of aluminum profiles? "Good water comes from the source", high-quality aluminum profiles must be made by factories with good reputation and good image. Because of scientific management, advanced equipment, and high-quality workers, the quality is guaranteed. So when looking for aluminum, first look for a factory. In terms of products, good aluminum profiles must have stable dimensions, smooth surfaces, durability, and fine workmanship.