1. First use a brush to take an appropriate amount of stainless steel pickling passivation paste and apply it evenly on the surface of the stainless steel;
2. Observe the condition of the passivation paste and wait for about 2-5 minutes. According to the dirt, the material of the board and the processing requirements, the reaction time can be appropriately extended;
3. After repeatedly wiping the stainless steel surface with a rag, you can see that the surface oxide scale and rust are completely removed, and the stainless steel surface is as bright as new;
4. Rinse it with a damp cloth or clean water repeatedly.