For brake pad manufacturers, the national standard requires one of the following conditions: Conduct type inspection, including: appearance, dimensions, shear strength (bonding type), compressive strain (normal temperature), impact strength, thermal expansion rate, fixed speed Wipe performance.
1. After the product is discontinued for a long time, when the production is resumed;
2. There are major changes in materials and processes that may affect product performance;
3. When there is a big difference between the factory inspection and the last type inspection;
4. When the national quality supervision agency requests the type inspection;
5. When the enterprise is continuously producing for one year;
6. When new products are put into production.