· Military and Defense: Favored for their durability, functionality and low weight, multilayer PCBs are useful in high-speed circuits, which is becoming an increasing priority for military applications. They're also favored due to the defense industry's increased movement toward highly compact engineering designs, as the small size of multilayer PCBs leaves more room for other components to flourish existing functions.

· Automotive: Cars are relying on electronic components more and more in the modern era, especially with the rise of electric cars. With everything from GPS's and onboard computers to headlight switches and engine sensors controlled by electronics, using the right kinds of components becomes increasingly essential in automotive design. This's why many auto manufacturers start to favor multilayer PCBs over other alternatives. While they are small and durable, multilayer PCBs are also highly functional and relatively heat-resistant, making them a good fit for the internal environment of an automobile.

· Aerospace: Like cars, jets and rockets rely heavily on electronics in the modern era, all of which must be extremely precise. From the computers used on the ground to those used in the cockpit, aerospace PCB applications must be reliable, able to handle the stresses of atmospheric journeys while simultaneously making enough room for the rest of the surrounding equipment. Multilayer PCBs present an ideal solution in this case, with plenty of protective layers to keep heat and outside stress from damaging the connections, as well as the ability to be made from flexible materials. Their higher quality and functionality also contributes to this utility in the aerospace industry, as aerospace companies prefer to use the best materials possible to keep their personnel and equipment safe.

· And Many More! Multilayer PCBs are used in a wide variety of other industries, including the science and research industry and even home appliances and security. Everything from alarm systems and fiber optic sensors to atomic accelerators and weather analysis equipment uses multilayer PCBs, taking advantage of the space and weight savings offered by this PCB format, as well as their heightened functionality.