Beijing Sanhe Lian Technology Co., Ltd. is a domestic manufacturer of ion beam etching equipment, independently researching and developing SLH brand ion beam etching equipment series products. Beijing Sanhe Union will give you a brief explanation of material etching: processing materials using the corrosive nature of widely used acids. Etching was used in ancient times for printing and copper plate carving, and is still a core technology in printed circuit board and semiconductor manufacturing today. This section introduces the principle and types of etching, and explains its relationship with the cleaning process as well as the precautions to be taken when etching.