1. The advantages of qualified non-standard screws are good insulation performance, non-conductivity, and a wide range of applications;

2. Compared with the three parts, the non-standard screws used in industry are small, but since the machine is assembled by non-standard screws, it cannot be shorter.

3. The acid and alkali resistance of non-standard screws is better, because the drilling is small and the pulling force is large, it can be removed at will when not in use, and the mechanical properties are good;

4. There are two types of non-standard screws: a flat-blade screwdriver and a flat-blade screwdriver, which is convenient and labor-saving.

In industry, qualified and high-quality non-standard screws play an important role.

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