What is a bonder used for? Used to do what products above which process steps?

Simply put, the SMD machine is the SMD electronic components installed (welding: wave soldering, reflow soldering) in the PCB board equipment, the application of a very wide range of areas, mainly in the production of electronic and electrical products, such as computers, TVs, cell phones and so on. Which specific process step is not very good to say, is the installation.