What are the differences and connections between PCB and PCBA?

PCB: The Chinese name is printed circuit board, also known as printed circuit board (abbreviation of Printed Circuit Board), which is used to support the carrier of electronic components and provide circuits, so that a complete circuit can be formed between electronic components.

PCBA: Refers to the processing process of one-stop service such as SMT patch, DIP plug-in, testing and finished product assembly after purchasing raw materials (abbreviation of Printed Circuit Board Assembly). 

From PCB production to PCBA finished products, one-stop service can solve users' worries about outgoing orders without worrying about follow-up problems.