Relatively speaking, the neutral rust removal agent is safer than the acid washing and rust removal. The PH value of neutral rust removal agent is close to neutral and does not contain harmful acidic substances. It has little impact on the operator and the environment during the use process, and its rust removal effect is also relatively mild, which will not cause corrosive effect on the metal surface. And pickling and rust removal often requires the use of strong acid chemicals, if improper use or improper operation, may cause serious personal injury to the operator, but also will cause environmental pollution. Therefore, in terms of safety, neutral rust remover is favored more by people.