What materials are not suitable for laser cleaning in real life?

As we all know, laser cleaning is considered as an environment-friendly cleaning method with wide range of application, and can protect the substrate to the utmost. It is mainly applied in cleaning of various molds, old aircraft paint, the cleaning of building exterior walls, weapons and equipment, nuclear power plant reactor vessels, the precision de-ester cleaning in the precision machinery industry, and the cleaning of the electronics industry. It should be noted that laser cleaning is a good cleaning technology, it is still necessary to consider the characteristics and requirements of the materials to be cleaned in use, such as the following materials need to be considered.