This steel mesh is the bitcoin mining machine main board. Our company has found a total of 6 steel meshes for a number of SMT steel mesh companies. The QFN short-circuited tin in the figure cannot be solved. The minimum defect rate is 30%. There is no place for the bad machine to be piled up. The customer is anxious to ask for the goods and can only find a solution while doing it. The contact with Linchuan Precision was around 7 o'clock in the evening. They sent technicians to the scene and proposed the solution. It was already 11 o'clock in the evening. At 9 o'clock the next morning, the steel net was sent to the factory, and the problem was solved immediately. The non-performing rate fell below 1%. Lin Chuan Precision uses nano steel mesh to help us solve the problem, but our previous supplier did not mention this steel mesh