There are many factories around the world that manufacture pcb aseembly. Some popular manufacturers of pcb aseembly include Guangdong Xinling Industrial Co., Ltd,Hayawin Electronic Technology Co., Ltd.,Shenzhen Langke Automation Equipment Co., Ltd.,Shenzhen Jaguar Automation Equipment Co., Ltd.,Termway (Beijing) Precision Technology Co., Ltd.. There are also many other smaller manufacturers and specialized companies that produce pcb aseembly for specific industries or applications.