The difference between an SMD assembly machine and an SMT assembly machine is that SMD (surface mount device) refers to electronic components mounted on PCB. In contrast, SMT (surface mount technology) involves a method for placing electronic components on a printed circuit board.  As one of the pick and place machine manufacturers in China, our company provides various pick and place machines, for example, small SMT pick and place machine/ placement machine,  SMT chip mounter/ mounting machine, SMT soldering machine, small SMD machine and mini SMD component mounting machine/ surface mount device, SMD pick and place machine/ placement machine, SMD surface mount device/ mounting machine, SMD soldering machine.