What is the difference between stainless steel passivation solution and passivation paste? Which cost is lower?

The basic components of passivation paste and passivation solution are the same. The difference is that the passivation paste is called passivation paste because some thickening agents are added to the passivation solution, which is easy to attach to the surface of the workpiece and make the solution sticky. Because the passivation solution can be recycled when the workpiece is used, the passivation paste with a thickness of at least 1~2mm at a time is attached to the surface of the workpiece and travels through the flushed zone, so the cost of the passivation solution is much lower.